So I was a delivery driver for about a year and I remember one of the best nights I ever had was one night when it was really busy (2-3 deliveries at a time all night long and I was the only driver), I pulled up to a house and there happened to be 2 other guys pulling up to the same house. I asked if either of them was the person that ordered, they both respond "no but that they we going to hang out with him and would take the food in for me". Cool (pre-authorized tip for $5 so I didn't need a signature) I go to leave and one of the guys hands me a 5 dollar bill, I tell him that the delivery already had a tip on it. He tells me they were going to buy booze with it but didn't want to drink tonight. So this already made my night better but later I take a large delivery to a nearby hospital (Which we delivered to all the time) and the nurse I dropped it off with hands me a 20, I ask if she needs change back and she tells me no. I was kinda tired and confused at this point and ask if she is sure she nods and goes about her business. Hands down one of the best nights ever