A way to describe someone who curses like a little kid and sounds out of place cursing.
Wayne: You can just go to h, e, double hockeysticks! You big you know what'er!
Jay: Wow! You are so scary! Stop cursing with crayons and be a man! Get over the election!
Cussin Bob is the phrase for an american overweight cousin that no one really likes but everyone respects for their blunt unfiltered opinion that is intended to be motivational and make us more productive members of society. Usually dresses in casual comfortable wear like punchline t-shirts and flat bill hats.
I talked to Cussin Bob last week and he told me I need to "get my lazy a** off the couch and spend more quality time being productive instead of shi**ing away my freetime like last night's bowel movement!"