N. Penisaurus - Derives from the male organ Penis, suggesting that the intended victim is a large penis (Or the derogative alternative "Cock")

when you're hungover as shit after a spending a night drunk as a skunk

A penisaurus is a dinosaur that is shaped like a penis, has a big penis, and acts like a penis

Meaning a very largely,ungodly,inhumane oversized penis.

dinasaur with a very large twanger

the biggest wang you have ever seen.

Ginormous monster mainly looking like a dick