Over Sleep 

To involuntarily stay sleeping longer than planned.

person 1,"How come you only just got up? It's like, 2pm."

person 2,"I must've overslept."

person 1,"Over sleep, is that even real?"

Over Sleep by LouMoo December 9, 2011

Virtual Sleep Over (VSO) 

A virtual sleep over (VSO) is when two people who want to sleep in the same bed but can’t due to any reason so they FaceTime (or video call through any platform) keeping the connection open all night.

Hey babe, I am sorry I am away on business in Ottawa Canada tonight but we can still have a virtual sleep over (VSO) and be close to each other that way.

Virtual Sleep Over (VSO) by Woody17 February 14, 2020

phone sleep over 

when you and another person (usually your boyfriend/girlfriend) stay on the phone all night while sleeping so they are the last person you talk to before you go to sleep, and the first one that wakes up says goodmorning and wakes up the other person

John: hey wanna have a phone sleep over tonight?
Carly: Sure! I'll charge my phone to get ready!

phone sleep over by happymeme February 22, 2011

sleep over

This doesn't have to entail just girls.
This is the act of two or more friends spending the night at one of the persons house. Usually involves the visitors bringing sleeping bags and sleeping on the floor. Common activites tend to revolve around a sleep over: Pillow fights, Board Games, Dungeons & Dragons, Makeovers, and talking about the opposite sex.
Most Pajama Parties involve a sleep over

Hey, let's call up everybody and have a sleep over this weekend.

sleep over by AdamBoBadam September 23, 2005

Ciotti Sleep-Over

A night spent with a woman that involves sleeping in the same bed, but not engaging in kissing or intercourse.

Miguel totally had a Ciotti Sleep-Over with Taylor last night; he didn't even get to second base!

Ciotti Sleep-Over by kkpatomatic November 20, 2010

Phone Sleep Over 

what weird, perfect couples do

Jack: Phone Sleep Over?
Jill: Sure!

Jack: Goodnight!
Jill: Goodnight!

Jack: Goodmorning!
Jill: Goodmorning! <3

Phone Sleep Over by kittentoitle January 4, 2012

back-yard pup-tent sleep-over 

A back-yard pup-tent sleep-over is when a guy invites a good boy friend over to party and spend the night sucking, fucking, and playing with each other's teen boners until they fall asleep -- then they wake up, take care of each other's morning wood, and then go inside and have eggs and waffles, fruit, and milk that your Mom made.

I had a lot of back-yard pup-tent sleep-overs when I was a younger teenager!

back-yard pup-tent sleep-over by USAF Cadet February 11, 2021