Definitions by C-Dee owe double gee

sicknasty 

1) Something that is sick and nasty in a good way
2)Something that is sick and nasty in a sick and nasty way.

Animal genitalia is sicknasty (in a bad way)

You mom is sicknasty hot (in a good way)

sicknasty by C-Dee owe double gee September 10, 2006