A Roundabout is a sexual
act which involves at least 4 men, whereby each
person is and has a
hole filled, thus creating the Roundabout effect.
Mike: Hey Jimmy what did you do last night?
Jimmy: Eh, nothin much Bryson and some of his friends came over last night.
Mike: Oh, is that the dude with Münchhausen's?, anyway so what happened last night?
Jimmy: We done this thing called a Roundabout, it was
awesome.
Mike: Dude, thats
sick.