Winterthur 1991 - the stage is right next to the bar, therefore the guys help themselves to some drinks. Nick compares the name of brewery Grolsch with the sound you make when you drink the beer. He goes on about his camping trips with Neil which leaves them yodeling "The Happy Wanderer".
I only heard about this: after being tempted by Neil all evening, Paul actually doing the full monty during the encores somewhere in the US, giving Peter Green in the audience and all at management the willies (is there a pun around here? A real stinker)
Melbourne 1996: Paul forgetting his lines in "Italian Plastic" and all that follows (see the club CD) including the new version of the song.