I think trick openings like this are cheap BS!

Here are a few games I played where I had to fend off cheap little trick openings by my opponents. What do you guys think of openings like this? It's worth mentioning, I won both of these games.

Here's the first. I play as black. 

Here's the full game.

the first one is fine, it's not a cheap opening, pressuring the weak F7 pawn is a good starting point for white.

The second yes, it's boring playing 50% of your games against wayward queen attacks which just invite a blunder in the first 10 moves to decide the game.

FYI, the second one is very common, but you defended correctly until  4... Nh6 

there's a number of things you can do here depending on how quickly white gives up.

you can push your d pawn then bring your bishop out to attack the queen (defended by the knight on f6). Or if white play Qb3, looking to double the attack behind the bishop play Nd4. after the king has sidestepped the bishop taking on f7, white has to move his queen to avoid the knight. once the queen is chased off the diagonal the king takes the bishop and you're up a piece for a pawn.

there's a lesson on defending this in the openings section on this site.

https://www.chess.com/lessons/view/27

The first game is actually quite fine for White and 5.Nxd5 is a theoritical mistake because of Nxf7! and this leads to a position where white have sacrifised a knight for a pawn and where the black king is vulnerable in the center.

The theoretical way to defend these position is to play 5.Na5, which means sacrifising a pawn, but getting ahead in development.

Another way to deal with this is to wait with Nf6 and instead play Bc5

Even though i said that Nxd5 is a theoritical mistake, that does not mean that you are going to lose every game. At your level i would believe you will have a high chance at surviving such a position.

In the second game you are correct that this is a bad opening from White and you are on to something when you play 3.g6.

However you should have followed it up with Nf6 instead of Nh6 and then Bg7 and 0-0. The point of this is that when you play g6 you weakened your kingside and by fianchetto your bishop and castle you get a very safe king position.

sample line

Debatable. There's no forced win for White in that line, AFAIK.

But I thought 6. d4! was so strong that 5. ... Nxd5 was almost extinct.

I gave up playing 1.e4 and 1...e5 against e4 long time ago, but I can tell you that in the first and second game you showed white did not play best moves, neither did black.  You should check your games with an engine after you play them, I found out by experience that is a good way to train and learn.

Good Advice.  Both sides are NOT playing the best moves and when White drops a piece it is not an indictment of an opening, because it's clearly been misplayed.

I am appreciating all of the replies and will certainly take some time to study some of the moves you guys are talking about. When I call these "trick openings," I simply mean that my opponents, playing as white, seemed to be playing for tricks, rather than for solid, principled moves. They were hoping I would slip up and make some sort of blunder where I easily defeated both opponents after (sloppily) defending their overly aggressive openings.

You can call it what you like, I call it a trick opening. Someone who is playing for tricks and hoping for blunders, not really playing a solid opening that they know well. You can say they misplayed the opening, whatever works best for you.

As many of you noted, I certainly did not play the best possible moves for black and still came out on top in both games. They were playing for tricks and were easily defeated once I made a few decent moves.