the "oWL" 

taking an exam at the Hogwarts School of Witchcraft and Wizardry in nothing but your momma made birthday suite

last night i studied for the"owl"

the "oWL" by kaite brown June 28, 2004

Nightie Owl

A nightie owl is someone (more commonly female) who chooses to go to sleep in the early morning, but selects a nightgown as their choice of sleepwear.

Guy: When did you go to bed this morning?
Girl: About 4 am. But I was really rocking my nightie!
Guy: You are such a nightie owl.

Nightie Owl by potteriffic September 18, 2009

Project Owl 

Project Owl is a discord server for people that are big nerds. It’s also the best discord server in the world all hail Adam discordgg projectowl

Damn project owl is hot

Project Owl by Jimthechildwatchrt August 27, 2021

night owl 

A meth user that stays on the pourch all night at a the meth house, watching everything, usually a paranoid tweaker.

look at all those gackulas on the pourch, damm night owl

night owl by S. 22nd street October 20, 2006

Boiled Owl 

Slang term referring to women aged 65+. Generally used after
the "Silver Back" stage. So called due to the prominence of
wrinkles resembling an owl which has been boiled. Still doable.

So, the timeline is:

Cougar (40-50), Silver Back (50-65), Boiled Owl (65+)

I'd do her even though she's a boiled owl.

Boiled Owl by Way More Awesomer March 10, 2008

Smelly Owl 

A sexual act usually involving a male and female. The male bend the woman over and proceeds to take a shit on her back. He then, without her knowing, snaps her neck; Giving her the appearance of an owl with the addition of a stench, more commonly described as smelly.

"Hey ralph, yesterday I got a new girlfriend, she was a smelly owl when I got done with her."

Smelly Owl by TDaaawg July 31, 2013

city owl 

A black person causing a ruckus in the city in the dead of night.

*black person yelling in the distance* "listen to them City owls hootin' and hollerin' at this time of night!"

city owl by FOG July 23, 2015