I'm just going to share this story from last Saturday. A good money-making night: the restaurant is packed, we're trying to turn over tables. Of course half of them are fucking campers.
So when another 8 top of 40 something year olds roll in, I'm begging my manager to give them to me. Bright eyed and with an imaginary tail wagging.
I get them! Service goes great! My night is saved because of this table! They are really awesome! Until I'm collecting their CC signatures (it's not rude- It's just that customers are more likely to take them home with them or forget to sign. You get in a shitload of trouble if that happens,) a guy passes me a cash tip.
Before I can take it the man sitting next to him grabs it. "Fight for it!!!" He says playfully.
Me: "Oh, ah ho ho! Very funny!"
Him: "No really, if you don't fight for it I'll keep it."
Me: "Uhhhhmmm," *awkward shrug* "It's yours! Bye!"
Later his friend is walking out and hands me an even bigger cash tip.
Don't fuck with tips like it's funny. It's awkward, and it's weird that you get a kick out of it.