1. Fat that creeps around to ones back, creating back tits.
Ex: Ugh, gross, look at the back taters on that dude.
Origin: On a family campout, aÂ relativeÂ was putting on a lifejacket and it smashed her together and created back tits. And taters was a way to not say tits in front of little kids. Put it all together, back taters.