The golf clubs were weapons used in Van Helsinki by Geoff Vampire, Man and Jim. They were only used in the 'golf fight' between the Vampire and the other two. Geoff appeaered to be fairly resilient to being hit by said gof clubs. We never see what happens to them, but given that post-fight Man and Jim use a baseball bat and a mop, it safe to assume they were lost or destroyed in the fight.
Behind the scenes and trivia:
- The director has gone on record as saying that this is his favourite fight from the film.