Noun
(sex, slang) The person in a threesome who both penetrates and is penetrated.
(sex, slang) A man in a threesome with two women.
Source: en.wiktionary.orgBordelon, nicknamed "Lucky Pierre", was credited with three Lavochkin La-9s or La-11s and two Yakovlev Yak-18s between 29 June and 16/17 July 1952. Source: Internet