The Mini Barf is a boss in EarthBound. It appears as a small pile of red/violet puke.
It is one of Master Belch's henchmen, fought at the end of the tunnel under Threed that leads to Grapefruit Falls. The slimy monster almost mistakes Ness and company for allies due to the Jar of Fly Honey they have with them, but it discovers they are Belch's mortal enemies and attacks them.
Its most annoying attack is its stinky breath, which can inflict the entire party with uncontrollable crying. The Mini Barf can also immobilize a target with mucus, or lower their stats with a terrible odor. PSI Fire is the best weapon against it.