the ice was poisoned and the water in the acquaintances cup was the melted ice that the acquaintance left.
Solve this Riddle if you can

A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?
Just guessing.
The man asked for a glass of water, but also passed the bartender a note that read "this is a robbery". Probably wrong

Ludra95 described correctly how I reasoned. I did not assume that an increase in mushroom material. That remained stable. My method is independent of the actual number of pounds sold, it is only based on the change in ratio.
The murderer put the poison directly in the glass of the victim. It is unknown who the murderer is. It could be the acquantaince, but why should he? For that we need a motive.

A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?
He had hiccups.

but what's the difference between the 1st n' 2nd Riddle,then ?
Both of them states that 1 of them is a Boy n' asks the same Question.
Ya this is the hard part. Both riddles look exactly the same. I'm not sure I can explain it very well but wikipedia has something on this here
http://en.wikipedia.org/wiki/Boy_or_Girl_paradox
It's quite complicated actually!

A man is imprisoned in a concrete jail in the middle of a vast desert. There are no other people or animals around. All he has is one wooden stick. How does he escape?

I don't think the jail needs a door when the desert is sufficiently vast.
Furthermore will the wooden stick become wet and dry during the change of day and night. If he is able to stick this thing into the walls of the jail when the stick is dry, then will this force break the wall.

A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?
Last week, the guy was in the bar making fun of some poor patron who ordered water. "Real men don't order water in places that serve beer!" He then turned to the bartender and said, "If I ever come in here and order water, just shoot me."

A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?
Squirt gun.

A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?
Squirt gun.
Nah, I've heard this one before and the answer is that the man had the hiccups and he wanted the water to stop his hiccups. The bartender, however, pulled a gun out instead to scare the man out of his hiccups.

A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the elevator, he goes to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment.
Can you explain why?

keju wrote:
A man is imprisoned in a concrete jail in the middle of a vast desert. There are no other people or animals around. All he has is one wooden stick. How does he escape?
Well, you take the stick and break it in half. Then you put the two halves together, which makes a whole. You put that hole in the wall and jump through it!

chessgdt wrote:
A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the elevator, he goes to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment.Can you explain why?
He is a dwarf.

Here is a probability problem of my own invention:
A man has a drawer with 150 socks: 50 red, 40 orange, 30 yellow, 20 green, and 10 blue. He takes six socks out. What is the chance that at least two of them are the same color?

keju wrote:
A man is imprisoned in a concrete jail in the middle of a vast desert. There are no other people or animals around. All he has is one wooden stick. How does he escape?
Well, you take the stick and break it in half. Then you put the two halves together, which makes a whole. You put that hole in the wall and jump through it!
This has got to be one of the best answers in this thread.

Here is a probability problem of my own invention:
A man has a drawer with 150 socks: 50 red, 40 orange, 30 yellow, 20 green, and 10 blue. He takes six socks out. What is the chance that at least two of them are the same color?
Ha, you almost tricked me. I was beginning to calculate probabilities when I noticed he takes six socks out, while there are only 5 different colors. So the chance that at least two of the socks are the same color is 100%.

shoopi wrote:
FakeName6 wrote:
Here is a probability problem of my own invention:
A man has a drawer with 150 socks: 50 red, 40 orange, 30 yellow, 20 green, and 10 blue. He takes six socks out. What is the chance that at least two of them are the same color?
Ha, you almost tricked me. I was beginning to calculate probabilities when I noticed he takes six socks out, while there are only 5 different colors. So the chance that at least two of the socks are the same color is 100%.
You got it! I made this as a form of the pigeonhole principle:
http://en.wikipedia.org/wiki/Pigeonhole_principle
A man goes into a bar and asks for a glass of water. The bartender pulls a gun and points it at the man. After a short pause the man says "Thank you very much," tips the bartender a dollar, and leaves without having had his glass of water. What just happened?