A 70's style blow job, done while listening to, or thinking of popular disco group.
While watching Saturday Night Fever last week, my girlfriend gave me a BeeGee.
Beegee - a hairy cunt.
As in the pop group, since they all are. Can be used both of the female genetalia or a person.
Haha, she drinks real ale! I bet she's a beegee.
Fuck off and get a haircut, beegee.