What's pink, red, and spinning really fast?
A baby in a blender! Ahahahaha!
Ahem. Here's a better one.
Three men are taking their final test to become Third Echelon agents. They are brought outside an enclosed room with on door. "Alright," The teacher says, "For your final test, you must show your willingness to obey every and any order given to you." He hands the first guy a gun. "Your wife is tied to a chair in that room. You have to go in there and shoot her." The first guy shakes his head and says, "No, you're insane, I'd never do that." And walks away. The teacher give the second guy the gun and the same instructions. He gulps, and goes in. After a few minutes of silence, he comes back out. "I can't do it. I just can't. He says, and leaves. "Well, it's just you, I guess," Says the teacher, and hands the last guy the gun. He nods solemly and goes in. The teacher hears some arguing, than lots of yelling, smashing, crashing, banging and thumping. Finally the last man comes out, his nose bleeding, and his clothes torn. "What the hell?" He asks. "The gun had blanks in it, so I had to smash her head open with the chair."