fool

stupid

Showing very little thought or good sense; the opposite of clever.

silly

Not sensible or serious; behaving in a foolish or funny way.

joke

A short funny thing you say to make other people laugh.

mistake

Something you do or say that is not right when you did not mean to get it wrong.

laugh

To make happy sounds with your voice when something is funny.

jerk

An unkind or stupid person. It is an informal insult, milder than a swear word but still rude.

nonsense

Words or ideas that have no meaning, or that are silly.

tit

A rude word for a woman's breast, and, in Britain, a mild insult for someone behaving foolishly. In the rude sense it is nearly always plural, "tits", which also gives Britain the phrase "gone tits up", meaning gone badly wrong. It is also a small garden bird, and birdwatchers say it all day with no rudeness in it at all. Medium strength. Recognise it, do not use it.