This is when you are banging a girl on the beach and you pull your slong out of her, then proceed to get sand stuck to your penis. Once your penis is fully coated in a layer of course sand you then forcefully penetrate you womans anal canal whilst she remains unaware. Due to the sudden shock of a sandy peen in her butt she will thrust her head forward poking her tongue out much like an iguana's reaction when scared.
by Riscuit4TheBiscuit September 13, 2017
Get the rusty iguanamug.