An erection.

A Frankenstein's monster with a Charles Atlas body and a pair of silver swimming trunks. Created by Frank N. Furter, first "love" was Janet Weiss, and was killed by Riff Raff, Frank's butler. All in one day.

a flying squirrel

In modern colloquialisms, if something sucks, it is called "sucky." So in theory, if something rocks it is thus called "rocky."

Observe.

ROCKY HORROR IS THE BEST!

A man who was made in just seven days with blond hair and a tan good for relievin' my....tension

When someone is not put together and looking rough.