when something is lame or doesn't go the way you want it to, always used in a negative tone.
adwight "dude, i got bad news!"
andrea "what happened, bro?"
adwight "my party got cancelled!"
andrea "woooow....slouchy!"

nick "how'd you do on the test?"
alex "i totally failed!!!"
nick "daaaang....slouchy..."
alex "i know!"
by captainvivo December 21, 2009
Mike wears a slouchy on his head every day to let others know he smokes.
by ToasterStroodles May 7, 2016
A beanie that is loose in the back and normally worn by Douchebags.
Can you believe Mike wore that slouchy beanie to meet our new director?
by The real Frank Doux March 12, 2016