Stupid Human Tricks
The first one alone will have you smiling all day...

Bohemian Fartsody: Dad's are so embarrassing.
Wicked Dice Stacking: Nobody knows what the hell this is.
2 Bowling Balls, 1 Strike: And the crowd goes wild!
A Perfect Circle: Harder than it looks, very cool.
Yo Yo Crazy: Amazing yo-yo stuff.
Zippo Tricks: That's so hot!

More stupid human tricks here and here!

Previously:
Funny Dog Tricks
Silly Cat Tricks