Because they are to big. Put a belt on.
you touch one part of the pant and gently ease your way down
You rub her first on her boobs the you pull down her pants and rub your penis every where around there and maybe have some sex.
My guess: to help reduce the pants clinging to you in the most humorous ways when you get up from sitting for a while.
gravity
Its usually called gravity. It makes you fall down too.
On the video AFV Part 209 on YouTube, there is not a part where a boy's pants fall down.
Well I don't really know why you'd want to make your pants fall down in the first place...
So they don't fall down
so their pants don't fall down when they get tackled
u could try sport stores
Dont button or zip the pants, cover it with your shirt. Have a string that holds the pants up and make it really invisible so people cant see it. Hold the string in one hand. When the time comes, let go of the string and your pants should fall down. Try it!
He will fall down or flirt or he will think that he is in haven or jizz his pants....
Big Time Reality
yes unless you want your pants to fall down
Because if you're overweight the fat mainly goes to your stomach, so it is much wider than the legs, sloping down at the end of the stomach. Your pants will slide down if you don't wear a belt.
possible answer: so if your pants fall down then people won't see there butts possible answer: so if they poo, you wont see a brown stain on your pants but on your underwear instead.
Justin Bieber's pants have fallen because he kept grabbing his donk when running up the stairs and again when he was on stage running to the back of the stage