labios del sur - The flappy bits below, like the ones that get all excited wh

The flappy bits below, like the ones that get all excited when you're about to get frisky.

I said my dog had the labios del sur of a madman. He barked at me.

My friend's labios del sur were so big, they could hold a whole pizza.

He said I had the labios del sur of a monster. I told him to shut up.