To speak so close to someone while emphatically making a point that your belly presses against them. Used predominantly in making a point, or to add emphasis while putting someone in their place. most effective for putting subordinates in their place. Also done while the bellier is standing and bellie is sitting at a chair face belly high.
Jake was talking about his favorite downtown restaurant and Will came over looking to belly someone and bellied him for thinking he knows about good food, he really put him in his place. Will is going to belly someone if they dont bring us to the front of this line.