Social Incest

Dating or having sexual relations within your circle of friends

Fred: John and Cassidy banged? I thought they were best friends?
Bobby: Yeah they commited mad social incest bro.

by SteezFebreeze September 27, 2011

Social Incest

When groups of friends, much like family, all sleep with each other and/or date eachother in turns.

For example, social incest happens when Billy, Suzy, Drew, Ann and James are all good friends. Billy and Suzy start dating, then break up and Suzy starts dating Drew and Billy starts dating Ann... then Suzy and Drew break up and Suzy starts dating James and Drew starts sneaking around with Ann behind Billys back

by herglasslegs May 3, 2009