Tooth-hurty.
or
The bartender offers him a warm smile and says, "For you, no charge".
or
Mt Rushmore. They're a rock group.. it's a rock...group
or
One has claws at the end of its paws and one has a pause at the end of its clause
or
One's a spineless, poisonous blob. The other is a form of sea life.
or
Three: One to screw it in, and the other two to help him down off the keg.
or