Not really kit spotting but being kit spotted myself. I've just been on holiday to Aus and went through Singapore airport twice, both times wearing a Liverpool shirt.
First time through the airport, the security guard proper straight faced going through everyones stuff. Checks my stuff and sends me through, I hear "You'll never walk alone buddy", turn around and he has a big grin on his face, asks the mrs if she's Liverpool too, she says no, hurries her on her way, back to deadpan look.
Second time through different shirt this time, can see passport checker guy has a big grin on his face, "Ah Liverpool, my favourite team."
Then in Sydney airport on the way to Singapore I get, "You're a brave man flying to Manchester wearing that."