Something or someone that is so useless they serve no purpose. For example tits on a nun serve no purpose, they don't have sex so they are useless a sex objects, they don't have babies so they are useless to produce milk for feeding.
by nicks75 January 29, 2015
by answerme1211 June 12, 2012
Damn wrench keeps slipping! Thing's more useless than tits on a nun!
That Andy is more useless than tits on a nun... can't do anything right!
That Andy is more useless than tits on a nun... can't do anything right!
by Missy Meg November 08, 2007