Used when someone has just made no sense whatsoever or if they have said something incredibly stupid and need reprimanded. Can also be symbolized by touching the back of your hand to your chin and pushing it in an outward motion towards the party being chins'ed.
Zach Braman said he wholeheartedly believed that he was a good looking individual. Upon hearing this the entire room chins'ed him.
by Bigbobjones September 29, 2009