I think that I would recognize my own underwear, now give them back!

Momentum, a function of mass and velocity, is conserved between portals. In layman's terms, speedy thing goes in, speedy thing comes out.

Get up without my permission, I'll blast your ass so far trough your head, it'll turn the moon cherry pie red.

CJ: Can you shoot?
The Truth: Kid, I'm a hippie. The only thing I've shot is acid. I did see a guy snort it once though. Thought his nose was a kangaroo and the moon was a dog!

Chinese people – who wants to get killed in our movie?