weenis

Lot's of opinions that it's the skin on your elbow--when I was a kid 30 years ago, however, it quite clearly was used as a combo-word in between "Wussy and Penis."

So if you weren't quite a Wussy (Weiner/Pussy), and you were kind of acting like a dick, you were a Weenis/Weenus.

"Dude, stop being such a Weenis! You talked us into climbing up here, so you get to jump first."