To perform oral sex, ordinarily fellatio. Pun on the historic British secondary level exam. Twinned with A Levels which are the act of anal sex

Especially used in the escorting world to signify the provider offers fellatio without a condom.
We had some top O Level action, she sucked the spunk right out my dick and didn't spit, swallowing the lot.

Candy is an openminded girl who has passed her O Levels.
by RobinP63 August 17, 2009
Get the O Levels mug.
Function: noun
a term for oral sex commonly used in the UK.
The escort service website guarantees that all their talents perform "O" levels.
by Bad Doggie November 8, 2007
Get the "O" levels mug.
Noun - A standardized term for a Secondary level academic qualification of showing the ability to fart, vomit, burp, as well as have the potential for being future Osama bin Ladens.

Adverb - A slang to show extreme anger, distaste or aggression, used commonly by Cambridge people. Refer to fuck
1. The world will end in the hands of O level scorers as they all show extreme talent in murdering themselves.

2. What the O levels?! I don't give a O level damned about what bullshit you just crapped!
by CAMBRIGDE June 14, 2009
Get the O levels mug.
A RPG player that only wants to raise his level, without enjoying the history and other game's features. Also known as upper.
by gianop February 16, 2007
Get the Level-o-matic mug.