When the power goes off.
An I-Don't-Think- He-Saurus
He was looking for a porpoise. (thought this one up but I doubt I was the first one that did.)
A crowbar.
Because she was a quack.
9/11 victims, they went through 87 stories in 15 seconds
I don't waste my time with these childish jokes.
IFap
A conversation of energy.
A power failure.