How old are you?

We took some friends out for dinner a while back. there were 7 of us total. I pulled the server off to the side and tole her that it was a special occasion and I'd really appreciate it if she could be "Johnny on the Spot" when taking care of our table. I TRIED to explain the phase to her, but I wound up just saying, "If you could take extra good care of us tonight, your tip will reflect that" I probably should have known better.
Speaking of servers, one of my favorite past times is tipping on the card, ill take the bill up to the counter (let's say it's $32.68) and they will ask ik I want to leave a tip on the card

So I say, sure, make it an even $40.00
They will stare at me for 30 seconds
Then stare at the register for another 90, and finally say, soooo $8.42 in tip ?


Nah, try again chuckles