Friend-sex 

When two clearly defined friends engage in some form of copulation, while maintaining the same level of friendship.

"Lexi, you're awesome. I think we should have friend-sex."

Friend-sex by JohnnyRogLex September 6, 2006

oops-friend-sex 

when you're hanging out with a long time friend whom you've either had some awkward sexual tension with for some time or haven't and one thing leads to another. You end up sleeping together...then decide it was weird and it will never happen again. You go back to being friends and never speak of it again. You decide it was just oops-friend-sex

"Yeah, it was super weird. We're definitely better off as friends. Just another case of oops-friend-sex I guess!"

oops-friend-sex by StewiesGirl August 17, 2011

friend-sex 

(verb) When friend #1 solicits friend #2 for intercourse or other sexual favors because friend #1 is desperate as shit and has not had any in forever and solicits friend #2 in an inappropriate way, time, or place.

So, I was standing in the bread isle at Giant when Matt approaches me and asks me for "friend-sex"... What the fuck is "friend-sex?!!"

Bob: "Hey, I haven't had sex in a while..."
Jenny: "Ok..."
Bob: "So I was wondering, friend-to-friend..."
Jenny: "Yeah?"
Bob: "Just as a favor, could you hook me up with, like, some... friend-sex?"
Jenny: . . .

friend-sex by Anitsirc & Arrais November 10, 2007

Friend-Sex-Lationship 

Good friends who love each other and have amazing sex together.

Jimmy and Sarah are good friends and sexaholics who can please each other better than anyone else can.

Friend-Sex-Lationship by Sarah March 8, 2005

Best Friend Opposite Sex 

Someone who does things your boyfriend or girlfriend would do for you when you do not have a significant other.

My Best friend Opposite Sex about to come cheer me up.

Best Friend Opposite Sex by YM23 May 1, 2016

National Have Sex With Your Friend Day 

A day where you can ask your friend for sex (and they might say yes).

You:Hey let's have sex,today's national have sex with your friend day.

Friend:Sure

National Have Sex With Your Friend Day by Haideez January 2, 2022

Friend, Friend, Sex 

The adult version of "duck duck goose", when at somepoint during a drunken night you randomly select a friend to sleep with because you are desperate and horny.

"i slept with dan last night"
"omg really why, i thought u were just friends?"
"we are...it was either dan or jason so i just friend, friend, sexed and i ended up with dan"
"oooh cool....lets go see a movie"

Friend, Friend, Sex by wolf p.a.c.c December 9, 2009