The Classic Comeback..
Is to walk over to them and say:

"OK - I'll show you mine if you show me yours first..."

They won't.

But, if on the infinitesimal chance that one of them does lob out their Old Man, you look at it and say:

"What the fuck is that? It's looks like a cock but much, much smaller...."

Cheers
( Legless Mister Stabby - shanks for the memory, Wed 23 Apr 2008, 13:38, Reply)