Top definition
To miss out on something because one doesn't realize it's full potential, usually used with the word 'on.'
Some artists aren't as well known as others, so people stay sleepin' on their music when it be really good yo.
by DarkNova December 18, 2001
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May 27 Word of the Day
The act of extreme masturbation. You must "knock one out" whilst in close proximity to any of the following; Your mum, a nun, your boss, a member of parliament, George Michael. A person with capabilities to act upon catching you mid self-abuse obvisouly ups the ante. Ejaculation must be reached before your danger wank target comes (no pun intended) to investigate. The higher the chances of being discovered with one's pants down, pulling one's war face is obviously where the danger comes from. The more danger involved the harder (or softer) it is to complete the task in hand (snigger). The more dangerous the better. The chance of being arrested, pummeled by an angry father or having your hand severed by an arab's sabre means that you are a pro "Danger wanker."
"I was in my bedroom and i shouted downstairs, "Mum there's call the police there's a madman with a set of steak knives hacking me to pieces!" As soon as I heard her scream, I dropped my trousers and commenced the danger wank. As I heard her stomp up the stairs I knew i had to be quick so i upped the pace, i heard her stumble on the top step, which bought me some time. Unfortunately for me I timed my finish badly. As my mum barged through the door armed with a rollign pin I chugged all over her. I spent the evening in A&E with concusion. Now thats what i call extreme DW"
by johnnynika May 30, 2006
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2
Sleeping past 11:30am, at least.
Yesterday i decided to sleep in, I got up at 2pm.
by Someone875875 October 16, 2007
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3
Being knocked unconscious during a physical altercation.
Bob: Steve was sleepin' after the fight!

John: Whoa, he hot knocked out?
by Chiefy Jackson November 30, 2017
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