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A person who is nocturnal by nature- their sleeping pattern has become reversed from the normal. Often the result of wasting time late at night/early morning online (usually streaming addictive TV shows, watching pointless YouTube videos etc)

Becoming a Nocturn can be a gradual and progressive change of state, sometimes happening without the affected realising that they are still watching Dexter repeats at 5.30am on a Tuesday morning.

Commonly found in students, the unemployed, and those whose jobs require them to work late at night.

Symptoms include, insomnia or oversleeping, excessive napping, disrupted eating pattern, weight gain (due to mindless snacking), the inability to maintain a normal daily routine, missing important appointments or events because you spent all night on youtube trying to teach yourself how to open a bottle with a lighter.
Dave- "Haven't you gone to bed yet? Its 6.20am!"

Fred- "I can't, I'm a Nocturn. I've been watching Animal Planet on Catch Up- if I sleep now then how will I know what happens to the baby Meerkat who lost its mum?!"

Dave- "You need help."
Nocturn by INeedANap December 30, 2013
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Nocturnal Weiner Party 

A late night snack consisting of hot dogs cooked on a George Foreman grill.
When I got to the kitchen this morning, I was annoyed to find a mess from Brian's nocturnal weiner party.

nocturno culto 

Aka Ted Skjellum. Guitarist/bassist/vocalist of the prominent black metal band Darkthrone since 1988.
He has been also in the band Satyricon.
Owner of Peaceville affiliated label Tyrant Syndicate.
Nocturno Culto owns most black metal vocalists.
nocturno culto by Damaso June 25, 2005

nocturnal flatulence 

The act of releasing gas, farting, during sleep. sleep induced farting.
My girlfriend had a bad case of nocturnal flatulence lastnight. She kept me awake all night.

Nocturnal dirt people 

People of low social standing who wait outside big box stores on Black Friday and try to haggle prices when finally let in.
Ugh…. Here we go again. My shift just started and I’m already dealing with the nocturnal dirt people.

borderline nocturnal

Staying up so late over winter/spring/summer break that you are sleeping through almost the whole day.
Todd: Dude, I've been texting you all day, why didn't you answer?

Mike: Sorry bro I've been so borderline nocturnal lately that I couldn't check my phone until now.

nocturnal commissions 

A term used for the wet dreams of the 45th POTUS over the insane amount of money he’s making while in office.
Yeah, I’m guilty of experiencing nocturnal commissions alright, although it’s less and less as I get older!
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That ol' gal of mine drives the 12 lane freeway during the week and a John Deere on the weekends. She likes opra and the Grand Ol' Opry. I love them countrypolitan women.
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She brought home alot of stuff and took it to the bathroom. She must be taking a witch bath.
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Smut Fanfiction
That chick doesn't write often but when she does, its for Kinktober.
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proper lad 

a lad that is such a lad that he is a proper lad
person1:did you see bob
person2: ya he was a proper lad
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