食い下がる
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips
ぼりぼり食べる is read as ぼりぼりたべる (boriboritaberu) and means to eat with a munching or crunching sound.
ぼりぼりたべる
boriboritaberu
くいさがる
to grab the front of the opponent's mawashi, place one's head against their chest, and lower one's hips