1 definition by lubbalubbatrue
One of those large rubber balls with a handle on top that you sit on and use to hop around. Although generally intended for children, adults also try to ride them in spite of the fact that they look ridiculous.
Mike was having too much fun to notice the strange looks from the pedestrians and cyclists as he thumped down the street on a bullyball.
by lubbalubbatrue September 22, 2009