In all 3 cases, someone forgot to pull it out.
3, duh. (My ex's 9 year old little sister told me this joke, and followed is up with: "and YOU'RE the math guy!" >< Burned.)
He tried to blow up a police car.
Pull the pin and throw it back.
HE'S A LITTLE BUSY TO WORRY ABOUT YOU RIGHT NOW DUMMIES
Because they can't even!
3: One holds the light bulb, and the other two spin the Chair.
Kick boxing
You can unscrew a lightbulb.
What did the Physics professor say when he forgot his lines of a speech? Give me a moment...ummmm.(momentum)
Nin, ten, " ....I'll leave now.
Someone that didn't take it out in time.
Some douchebag forgot to pull it out in time.
Someone didn't pull it out in time.