Is the exact opposite of an actual chill person. Usually brags about his dick size to people he thinks are his friends and in reality his dick is just ten inches of foreskin and smegma. Someone who is a Chill guy gained this label by referring to themselves as a "Chill Guy" on multiple occasions and says he is "down to fuck". When you use this word to describe someone you're most likely being sarcastic.
by TheREALRasputin February 2, 2017
by kman976 November 26, 2010