When someone is gill-ty of saying something incredibly stupid or wrong and instead of having the "gill" given to them by the person who called it on the gill-ty person/party he or she can opt for gillicide where the gill-ty one gives the gill to themself.The person can only use gillicide by calling gillicide before the person gives the gill or says no gillicide Also see Gill for further explaination on what a gill is.
Person 1: Them Louisville Cardinals are sick they got a sick offense with Albert Pujols.

Person 2:Give me gill Albert Pujols plays for the St.Louis Cardinals

Person 1:Gillicide

Person 2:Dam... ok bro

Person 1: (Administers the gill)
by Unkown Sources May 17, 2008
Get the Gillicide mug.