From College Humor, between Amir and Streeter.

The first one, Amir pranking Streeter, which is funny, but mediocre:

The revenge, Streeter pranking Amir, which is not at all mediocre:

Related posts:
Sometimes you don’t want to laugh
If you watch this 100 times you will still laugh.
This made me laugh once I realized what was happening.
This made me laugh out loud a couple times.
From a friend: An argument in favour of the hijab: it’s great for pranks