Heh, professionalism vs. flight kit stickers. You know who had more stickers than anyone I've ever seen? The Air New Zealand 777 crews I used to meet everyday at SFO. You'd have these old crusty captains in their late 50s showing up to work to fly their 777 and they'd have stickers on their flight kits that I can't even type out because of the profanity filter. Those Kiwis were a hilarious bunch. The one I'll never forget was a sticker of a Kiwi bird wearing sunglasses using an ANZ 777 as a skateboard and it said "Haters gonna hate". When I saw it at the counter me and the captain both broke into laughter together, good times over there.