I might be the only one who does this, but sometimes when I get to an ATM and have to swipe my card to open the door, but see that someone else has taken the front spot at the ATM door I’ll pretend to continue to fidget for my wallet when really I’m just waiting for the other guy to do it. It seems really stupid, kind of like how you reach for your wallet even if you know the other person is going to pay at a restaurant. I guess it’s not the same thing, but this three way ATM thing did actually happen to me yesterday but someone on the inside ended up coming out so the point was moot anyway.