short for the number twenty.
you have change for a shwen?
An exclamation used instead of saying "what the hell." When one is either amazed, shocked, or confused, one can employ the use of "shwen."
Person 1: That guy died from drinking too much water.
Person 1: That hot girl is magurting you, you should go talk to her.
person 2: Shwen! maybe I will...