Funny

Ok, I'm officially a geek. I think the funniest joke in this contest is the following:

"Two functions, x^2 and e^x are walking down the street. Off in the distance they see a differential operator walking towards them. e^x turns to x^2 and tells him: "You better get out of here! If that operator differentiates you a few times you'll disappear, but he can differentiate me all he wants and I'll stay the same."

So x^2 runs off and e^x goes to greet the differential operator. "Hi, I'm e^x" he says. "What's your name?"

The operator looks at him with a demonic grin and says: "d/dy"."

Ok, I haven't read all the jokes, just most of them till the point where I got bored.

Somebody actually explains the joke for people who's brains don't run on math :
"For those with non-mathematical backgrounds:

d(e^x)/dy = 0, so e^x will be differentiated into oblivion (as he warned x^2, but presuming it would be a d/dx differentiator: d(x^2)/dx = 2x, d(2x)/dx = 2, d(2)/dx = 0, d(0)/dy = 0, etc.) instead of staying d(e^x)/dx = e^x, etc. NB also d(x^2)/dy = 0, so x^2 was right for running off in either case."

Later edit: (please, give this post a second chance..) Second funnyest (not so geeky, but supposedly funny of you're a grad student) : "How many grad students does it take to change a light bulb? One, but it takes 7 years."