One is a blood-sucking parasite, the other is an insect.
or
A Broncosaurus or a Tyrannosaurus Tex.
or
Luckily my injuries were only super fish oil
or
Fifty — one to screw in the bulb and 49 to guard him/her.
or
custardy battle.
or
Bugs Bunny.
or
He got caught peeping on a test.
or
Everyone is happy when the case is closed
or
Man blows into it, but God only knows what comes out
or
Polar Bond.
or