[Darryl is wondering aloud what John Travolta was doing celebrating with the Australian football team after their match yesterday]
Andy [after a long pause thinking up of a poor joke]: Maybe he was supporting his girlfiend's team. Olivia Newton-John's Australian, isn't she?
Marc: Is that his girlfriend?
Garry [explains with the patience of a saint]: No, that was his girlfriend in Grease.
Marc: Right.
[pause]
Marc: So they're back together now?