look up any word, like timebomb:
 
1.
When an otherwise classy person chooses to drink cask wine goon they can be referred to as clasky.

To engage in behaviour below your class.
A group of girls can engage in clasky behaviour by going out for a night on the town in their finest clothes and getting drunk on a cask (the cheapest available wine) beforehand.
by Trish174 October 12, 2011