When an object of saturation was so bountifully exquisite that just dubbing it bussin (with a lowercase b) would be a incontrovertible disservice to the bussin-in-question. Therefore, a capital B is mandated to stand before this statement as a prerequisite to a delicious specimen.
Friend: *Throws in game
Me: You fucking suckbussin boy
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Friend: Holy crap I ate a lot of food
Me: You are becoming a bussin boy