Wiktionary
teabagger
n. 1 (context dated pejorative English) An upper class participant in motor racing. 2 (context slang vulgar English) A person who practices teabagging, i.e., the sexual act of inserting the scrotum into someone's mouth. 3 (context neologism often derogatory English) An affiliate of the (w: Tea Party movement), or a supporter of its protests and/or ideology.