The delicate and supple skin on the joint of your kneecap. Noted particularly for the lithe manner in which it bends. Similar to the wenis of the elbow, only below the downstairs.
"So this girldropstrou...and she had the smoothest wagina! It was sooo hot!"
an insult when someone is being a total pussy. They are a whiny vagina. A wahina.
"Dude, Tom keeps bitching about being passed over for that promotion."
"I know, all he does is piss and moan about it all day."
"He doesn't even deserve the promotion!"
"He is being such a wahina about all of this."