Is NOBODY wrong in the post ? POST : A local bar has $1 beers every weekday. Standard tip is 15-20%, and I didn't have any coins on me, so I decided not to leave a 15 cent tip on a $1 beer. If I had gotten a few drinks, I would certainly have left a tip but I did not see the need to leave a couple cents for a single beer.

When I handed the bartender a single dollar bill for my drink, she said "So I guess no one has taught you about tipping before. Bartenders make almost all their money off of tips, and this is not a bar that you want to not tip at." I handed her another dollar because I did not want to deal with the uncomfortable situation, drank my beer, and left because the (in my opinion) rude service left me uninterested in the bar.

Am I the asshole for not wanting to give her a 100% tip because I didn't have any change on me?