A penis with an average or less than average length, but an above average girth.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

–noun
1. a woman who engages in promiscuous sexual intercourse, usually for acceptance; prostitute; harlot; strumpet. Bad hair
–verb (used without object or sometimes a really desperate guy)
2. to act as a whore.
3. to consort with whores or other really really unfortunate mirrors.
4. to open one's leg in an unattractive manner. usually one's odor is released (i.e skunk)
–verb (used with object)
4. Obsolete. to make a whore of; corrupt; debauch. To expose one's cellulite.