if there´s is not enough bulk by her boobs turn she round and stick your face between her buttocks to make a real good backstage brumskie while you shake your haed quickly with out taking breath and give your noise with: "brrrrr"
To put one's face in between a girl's breasts, rubbing head back and forth between both breasts while saying "Britski". Sounds to others as "B-b-b-b-b-b-b-b-b-b-b-b-b-ritski!!!!!"