I am picking up on this thread to convey a tipping experience from California a couple of weeks ago. I did notice a new turn of phrase since my last time in the States when paying in cash – ” Will you need change from this, Sir” is a great way to put pressure on the customer.
The biscuit, however, was taken by a young man in Santa Barbara who asked this very question when my son was settling a $27 check with a $100 bill….. The answer does not require repetition and the waiter ended up with very little if anything for his efforts!!