When two (or more) males engage in sex with the same person. Although the term originates from a form of wrestling that involves hand slapping a team mate to switch positions, the actual hand slapping may not always be present during sex tag teaming. However, the idea of switching positions during times of low physical or mental energy remains one of the primary traits of sex tag teaming--therefore distinguishing it from other subcategories of group sex.
"Wow. You and I totally tag teamed that bitch last night! Wanna do it again this weekend?"