Wereskank 

Really nice person that was turned overnight on a full moon as a result of a sexual act. Most often change into their skank form on a full moon.

Don't go out tonight the wereskanks might be out.

Wereskank by wereskankhunter January 2, 2010

were-skank 

Someone who's totally normal during the day, but as soon as night falls they turn into a huge skank.

Sally: I can only get in touch with my boyfriend during the day, at night he never answers his phone.
Joan: That's because he's out at the club, being a were-skank.

were-skank by classybitch July 30, 2009

Wereshark 

A person, when during a Full Moon, becomes a Ferocious Part-Shark Creature (Or a Cute, Fluffy Boi or Gurl <(^w^)>)

That Night, He became a Wereshark

Wereshark by Sweet 'n' Sour Sauce December 25, 2021