Too late to edit my own comment but one obvious exception to the "don't tip if paying standing up" is of course at a bar. I'm not going to fail to tip my barten

Too late to edit my own comment but one obvious exception to the "don't tip if paying standing up" is of course at a bar. I'm not going to fail to tip my bartender. Very different thing than a POS terminal prompting me for a tip at Subway.