What's your approach to tipping — when do you do it and how much?

A natural way to answer

I think it depends on the service and the country. Where I'm from, tipping isn't really expected, so I only do it when someone goes above and beyond. Abroad, I try to follow the local custom so I don't come across as tight.

Key phrases to use

• round it up — to increase a payment to the nearest whole number as a small tip“Just round it up to twenty.”
• added on — included as an extra charge on top of the price“A service charge was added on at the end.”
• tight — unwilling to spend money; mean with money“Don't be so tight — leave him a tip.”
• slapped on — added quickly and without much thought, often unwelcome“They slapped on a delivery fee at checkout.”