ONS stands for one night stand: a single sexual encounter between people who do not expect to see each other again. A booty call, a fling and a hookup are close relatives, and the words differ in how often people meet and how well they know each other. A paid booking with an escort is a separate thing, because the terms are agreed and paid for beforehand.
The terms
- ONS or one night stand. One meeting, usually the same night, with no plan to repeat it.
- Hookup. The broadest word. It can mean anything from kissing to sex, so it is worth asking what someone means. Meeting people through apps for sex is often called hooking up.
- Booty call. A late message to someone you already have sex with, with no date or relationship attached.
- Fling. A short, casual affair that lasts days or weeks, usually with an understanding that it will end.
- Casual dating. Seeing people without commitment, where sex may or may not happen.
How they differ
The main differences are how long it lasts and what is expected afterwards. A one night stand ends the next morning. A booty call repeats, but without the rest of a relationship. A fling has a beginning and an end that both people can see. A hookup can be any of them. FWB and NSA describe the arrangement behind them, and DTF is the shorthand people use to ask.
Consent and safety
- Consent is needed at every stage and can be withdrawn at any time, including after you have agreed.
- Someone who is too drunk to choose cannot consent.
- Meet somewhere public first, tell a friend where you are going, and arrange your own way home.
- Use condoms, and test regularly if you have more than one partner. NHS sexual health clinics offer free, confidential testing.
- Emergency contraception is available from pharmacies, GPs and sexual health clinics.
Safety and help has the contacts if something goes wrong.
A paid booking is not a hookup
With an escort the time, the fee and what is included are agreed before you meet, the meeting ends at a set time, and nothing is owed afterwards. That clarity is why some people prefer it to a casual hookup, where expectations are often unspoken. How booking works covers the first message, and what escorts charge has the measured London rates. For other terms, see the dating and hookup slang A to Z.