An acronym meaning Sick Wicked And Nasty. It can be used to describe how sick, wicked and nasty a person looks, acts, or feels by just saying the said acronym. It has a double meaning for either good or bad terms.
good term: i met this girl/guy at a club and s/he was so SWAN!
bad term: why are you acting so SWAN for?
bad term: why are you acting so SWAN for?
by bubbabear January 11, 2009