'orange bloons' refers to a extremely off topic comment that some dumb ass has said to try and prove a point. usually when he/she is out of arguments.
comes from the game Bloons, where the no orange balloons ever
bob: 'i think we should to to the beach today cause it is really hot'
sarah: 'but i just wanna eat a cheese cake'
bob: 'i don't see any orange bloons'