I was just reading the autobiography of Simon Donald, one half of the Donald brothers from Newcastle who started the legendary Viz comic. He tells a story about the Viz team being invited to the BBC studios for an interview during the 80's, and when they were waiting in the large foyer they were introduced to Robert Plant who sat and said hello. At some point he got up and said he had to use the bathroom and said his goodbyes. As he's on the other side of the foyer and walking up the stairs, Simon Donald shouts "Robert...are you going to do a BIG LOG?" to which a visibly embarrassed Plant turns around and says "erm...erm....no" and scurries off in a hurry, to the sound of raucous laughter from everyone in the vicinity.
Childish. But I would have laughed too.