When you ask your friend if they can spend the night at your house so you can have sex with them.
Wanna have a sleepover?
HELL YES said Brendan as he has dreamed of this for years.
by Bill cosby’s boyfriend June 13, 2023
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An out of town conference that you attend for work.
John: Remember that White Collar Sleepover we went to last year? We got so drunk, man.

Porter: You mean the International Tourism and Travel Show, the largest 3 day conference in the world?

John: Uch, nobody remembers seminars or conferences, sleepovers are forever.
by Mike109999 September 7, 2022
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A sleepover party involving violent mass intercourse where participants are dressed as donkeys.
Toryn had a great time at the donkey orgy sleepover
by EEAAWW December 3, 2021
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when two people fall asleep over facetime together
Diana and Steve had a facetime sleepover because they could not see each other in person
by beepbeep October 11, 2020
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when 2 or more girls are at a sleepover and make bad decisions at night
oh we sent that text last night when we were sleepover drunk
by bellstherapper August 12, 2023
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The uncle boogalo sleepover move is meant to be one of the most intricate sex move ever to be created. First you have to gather 2 short guys and 2 tall guys, then you have the short guys jack off into a plastic pail while the 2 tall guys 69 each other in another corner across from them, then at exactly 11:00 am they all have to get in a 1932 Stout Scarab and drive to a sperm bank in which they'll go behind and fuck each other however they want without getting caught. But at 11:40 am they have to get back in their Stout Scarab and drive to a IHOP and every single one of them have to get the world famous Choclate Choclate Chip pancakes with a side of Sirloin Steak Tips and Mountain Dew. Finally go home and take that pail and dump it on all of yourselves
Friend 1: So what did you guys do over summer
Friend 2: We planned out how we would do the greatest sex move of all time
Friend 1: And what's that?
Friend 2: Uncle Boogaloo’s Sleepover
Friend 1: oh that's great, did you do it perfectly
Friend 2: yes and I'm fucking proud of it
by BigPeePeePooPoo January 6, 2021
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The decision by numerous drunk and high party guests to sleep over at the hosts’ house without proper permission.

As in a hostile takeover, these party-shareholders acquire the target’s assets, such as sofa cushions and armchairs, and force the hosts to accept the merging of their bedrooms into communal cesspools.

The aftermath of a hostile sleepover may see animosity between the hosts and the guests, as well as the gutting of hosts’ refrigerators and towels as guests seek to serve short-term hunger and hygiene needs.
Mitchell and Andrew had a Halloween party, everyone brought a plus one, and by 2AM with six people passed out on the couch and on the floor, it was clear a hostile sleepover was about to take place.
by daltonjfk October 30, 2019
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