And this is funny how? (Or, why andy is glad that she locks her door)

Not a prank, but another reason to keep the door locked:
3 a.m. Blake comes back to the dorm after killing off half of his brain cells drinking. Again. Goes into the restroom, takes a left towards the urinal and takes a leak.

Only this is not the restroom. Blake has missed the door by one and has instead entered a dorm room. He is currently pissing on a papasan chair.

Roommate A, hearing the noise, wakes up, and at first thinks Roommate B is peeing in bed. No, that can’t be it. Looks down from the loft and sees Blake.

Roommate A: “OH MY GOD! BLAKE! STOP!”
Blake: “muuuuuuh?”
Roommate B: “OK. That’s it. From now on we lock the door.”
[Blake, hearing the words ‘lock the door’, locks the door]
Roommate A: “Blake! Turn on the light and unlock the door!”
Blake: “muuuuuh?”
Roommate A: “Blake… Turn on the light.”
[Blake turns on the light]
Roommate A: “Now unlock the door”
[Blake unlocks the door. He turns around and finally realizes what he has done. He finds a roll of paper towels and covers the chair cushion with a sheet in an attempt to remedy the situation.]
Roommate B: “Blake, get out of here”
[Blake somewhere in him finds some small level of coherence enough to speak]
Blake: “Now I admit, what I done is wrong… but YOU gotta admit that if you kept your door locked --”
Roommate B: “BLAKE GET OUT OF HERE BEFORE I KICK YOUR ASS!”
Names have been changed to protect the innocent. The guiilty get no such luxury.

In the guys’ floor of the dorm there’s always putting the sheet of plastic wrap in the toilet above the water level so you get a nice splashing effect when they wee standing (don’t think this would work with urinals-- at our college they sort of shifted sexes between dorms/floors every couple of years (to even out the damage) so we just had toilet stalls).