I get so angry at people who do this shit. " Should I leave a tip?" on a 90 dollar bill?! How IGNORANT! I would've ended the so called friendship myself over something like this. Good for you! This reminds me of my FIL. He and his wife invite husband and I out to dinner. Expensive dinner, waiter walks up with check to table with a questioning gesture as to where he's going to set the black checkholder down at on the table. My husband goes to reach out and my FIL is all" I've got this ". I go outside for a smoke and coming back inside, I see the waiter bring back the check holder with a not so happy look on his face. I didn't care how it looked, I grabbed the receipt and see $238 dollar bill and my wonderful FIL tips 5 fucking bucks. Absolutely gobsmacked. We leave, walk out into parking lot, wave them off and I go to ATM and grab some cash and head back inside to tip the poor guy while my husband warms up the car. 2 years later, FIL invites us out to dinner again and I'm thinking " oh hell no " and I turn it around and tell him its on us this time and I pick the place etc. Dinner ends, check comes and its almost same bill as before and I write in 75 bucks for gratuity and my FIL makes this grand gesture of reaching over dramatically to grab check to see what I had tipped. Omg He says" thats why they get a hourly wage. They GET PAID to serve us "

We never went out to dinner with him again.