My sister's friend met Gok Wan in a club in Liverpool one night, and went up to him and said "Hey Gok, sorry to bother you, but what do you think of my outfit?" (or something like that) and he just said "Sorry love it's my day off" and just turned his back on her.
I know he must get it all the time but politeness costs nothing. I was gutted because I love Gok on TV.
To be fair, if you met your GP at a social function, you wouldn't ask them for a medical opinion on your Farmer Giles would you? Perhaps if your mate had just gone up and said hello, love your show, he might have been more ready to chat.