The act of trapping a person underneath a blanket and physically assaulting them. The blanket is used as: 1) a deterrent for the assaulted person to fight back; and 2) a way of keeping the assailants anonymous.
We're going to give that annoying bastard a blanket party tonight.
by UrbanWebster February 15, 2004
A violent group attack on an unpopular GI. Usually done in the middle of the night, in a barracks situation, the victim’s head and body is covered with a blanket (preventing him/her from fighting back or identifying assaillants). Occassionally these attacks are used to bring a barracks bully into line but unfortunately hundreds of attacks per year are aimed at suspected gays. This type of hazing is tolerated by noncommissioned officiers who see it as a means of "self policing" among privates and trainees.
Smith over there has been a real fuck-up and kept us from getting a pass into town last night. Let's throw him a blanket party tonight.
by Bill Peters October 06, 2006
Usually a reaction to a long-term annoyance brought about by one person, a blanket party is where an unsuspecting person (individuals only, not on groups) is taken by surprise when a blanket is thrown over them and they are wrestled to the ground, then beaten with blunt objects by other members of the group.
After the first blanket party, they usually get the message.
by Kung-Fu Jesus July 21, 2004
When a group of male, prepubescent teens gather in a room, each with individual blankets draped over their laps whilst watching pornography. What happens under each child's blanket goes unspoken.
damn... my son and all his weird friends really love to jack off together. must be some sort of blanket party.
by butt hash hero August 26, 2013