i'm a pretty reasonable tipper....never thought about tipping the mail carrier....hell, the fed ex guy runs up, rings the doorbell, and by the time i get to it he's already half way down the street....delivery always, haircuts, although i tip the asian lady more because she does a little extra....waitresses, depending on the service, i've tipped as much as 20 bucks (not so much these days, the calculator in the brain is always computing how much i have left to buy a pack of smokes the next day)
so yeah, i tip people who don't really deserve it, basically the standard 10%....only remember one time i didn't tip.....ordered dominoes, order was an hour late, guy finally calls when he's like 20 seconds from my house, and when i open the door he's all carefree and acting like we're best buds.....he lingered after i got my pizza, guess he thought i was still gonna tip him, i just shut off the porch light and closed the door....all he would have needed to do is call and tell me some bullshit about being late, you know, act like he gave a shit....whatever
also the last time i ordered delivery from there.....last thing you want is to get the same guy the next time you order and he throws a fart into the pizza box