None, that's what students are for.
One. He is drunk, and he tells the bulb to screw itself.
Juan (This probably has been posted earlier but is still funny )
Four. One to hold the lightbulb and three to smoke until the room starts spinning!
I don't know, you tell me.
Pupil : I don't know Teacher: Correct !
Student: "Alive".
Bro, do you even function?