idiom
1. Severely irritated to the point of anger.
History and Etymology: Origin unknown.
Did you see the boss let into Kathy after she hit "reply all" and sent his home address to all the clients? God damn, his tits are on fire!
When a stripper splits a paper match & affixes it to her nipples & then lets a voyeur light the match.
Laura was the one who did this interesting trick of letting the customer light my tits on fire.
1) Fantastic. Awe inspiring. Exciting.
This party is tits on fire!
Fart rowdy!! That roller coaster was tits on fire!