April Fool's Day, learned vs. learnt, tipping in America

April Fool's Day – On April 1st

Practical jokes – jokes, usually physical, at the expense of someone else

To fool someone [into something] – to trick someone [into something]

A fool – an idiot, a moron

British vs. American English

Past participle – many in American English are formed with –ed

In British English these are often formed with –t instead

Example: “I have learned” vs. “I have learnt”

Tipping

Usually NOT included, except for large groups (typically 8 or more people)

Average tip 15%, good tip around 20%, bad tip less than 15%