Why shouldn't you enter into a contract with Wolverine?

Because of his retractable clause.

More dad jokes you'll groan at

Why do seagulls fly over the sea? If they flew over the bay, they would be bagels.What do mermaids use to wash their fins? Tide.What did the nut say to the other nut in a game of tag? Imma cashew!What did the sink tell the toilet? You look flushed!Knock knock. (Who’s there?) Déja. (Déja who?) Knock knock.If April showers bring May flowers, what do May flowers bring? Pilgrims.