A casual sex partner with whom you only have anal sex.
No, man, we don't do it in the vag, she's just my Muddy Buddy.
all the benefits of having a relationship minus the bullshit like acting interested in Every Word He Says, trying to sleep through mega-hertz snores, feeling like shit when he can't use a calendar to remember your birthday, and being nice about it when he doesn't make you come.
"So are things getting serious with Luis?"
"Nope - we skip the serious and go for the fuck. We're fuck buddies."
A friendship for the purpose of cuddling without any complications and expection of progression to 'something more'.
Sophie: Hey, I'm feeling really depressed right now and since I no longer have a boyfriend, I really need a cuddle buddy to make me feel better.
Mark: On my way!
Noun: male heteroflexible sex partner that engages in fellatio"
"Most nights I work out at the gym with my blow buddy Joe."
When you are straight, but you give your buddy a buddy job.
I gave my buddy Rob a buddy job.
A person of the opposite sex in whom you have no interest in besides being friend but continue to flirt with anyway. This person may or may not like you.
Girl 1: "You were totally just flirting with him. Do you like him?"
Girl 2" No, he's just my flirt buddy."
a person that is useful in times of extreme horniness, and is there to give a nice thoughtful fuck when it is needed.
"I have an appointment with my fun buddy today after work. We plan to explore route 69."