The opposite of self first.
Self last requires your
buddies to stick with you to avoid awkward situations that could
arise from a person of the opposite sex wanting something you do not want anything to do with.
Your friend really wants to
make out with
you and you know he/she is planning on
making a move but you want to avoid it. Therefore you call "self last" to your crew and they are forced to hang with you so no moves can be made.