Each player must play balancing three poodles on their head.
What strange chess rules can you think up?
My brother had a chess board cake and icing pieces for his birthday. Me and him played a game before we ate the cake.Every time we captured a piece we got to eat it That was fun. Though it is not really a rule.

My brother had a chess board cake and icing pieces for his birthday. Me and him played a game before we ate the cake.Every time we captured a piece we got to eat it That was fun. Though it is not really a rule.
That may Not be "a rule," but, by golly, it Should be!

Each player must balance the timer on their head, the first to have it crashing down loses, no matter what.

You can capture a piece or a pawn, except if it were a full moon on Tuesday, in which case you would have to give it back. it'a a variation of chess along the lines of the fizzbin card game in the original Star Trek.

Just before the game starts, each player must drink a quart of water, the first to use the restroom loses. The use of catheters and urine bags are prohibited.

You can only Queen a pawn if you make an orgasm face.
Who gets to rule on whether it was a "real" face? Different people can express themselves in such different ways .... I've heard.

They have to forfeit the game if they won't play by the rules :-)
If its not otb, they have to post a selfie.

After each piece captured, the lost piece player must prance around doing an impression of Mick Jaggar.

How about Hot Potato Chess? Where tossing back and forth one of those Hot Potato game (do they still make those?) the person who it buzzes on must remove a piece.
Elevation Chess: You can move any minor piece on top of the rook, who can the move it to a new square. Advantages: Change bishop colour. Move slow knights. Disadvantage: If the rook is caught both the rook and the minor piece are lost. Knockover rule: If you accidently knock one of your pieces over, it is removed from the game. Flying King: Same rule as is in Chinese Chess. If there are no pieces on the file/row that separate the two kings, the player can move his king and capture the other.
awsome!