A hare dare.
Because he got there before the hare.
Hare in your milk!
Hop on Pop.
A receding hare line.
They both multiply a lot.
Haremail.
A student repsonds, "3 boys + 1 girl = problem. 1 boy + 3 girls = challenge."
Failing to get away.
Alcmene triple-dog-dared him.