A friend/buddy/classmate you only see at school, in between classes/in the halls. You may also frequently copy homework off of these people. Or bum lunch/bus money and rarely payback, due to your lack of a complete friendship with them.
Similar to: bus buddy
Rob: lol it was funny, i went to school after Winter Break, and all my hall buddies were saying 'Hi'.
Dwight: Haha, yeah I know what you mean. So I'm guessing you're not gonna be bringing any lunch money now.
Rob: Yup, just money for the bus over here. A hall buddy is better than your parents for money, you don't have that guilt hanging over you for not paying back, like a bus buddy.
The person with whom you are taking a shot, of alcohol, with.
Danny and Jessica prepped their shots with Jack Daniels and imbibed them. Thus the two became shot buddies.
a gay best friend. or 2 gay platonic friends.
Oh honey, its okay if I go shopping with Chad, he's my flutter buddy.
or
Dave and Drew don't fuck, they're just flutter buddies.
Friends that you know from your diaper days
I hosted a bachelor party for my diaper buddy
Male 1: "Yea man, I got us a hook up at the show tonight, we don't have to pay cover"
Male 2: "Sweet, how'd you score that?"
Male 1: "I'm bush buddy with the door guy, remember that blonde girl from last weekend?"
Both males pause.
Male 2: "Yep, Eskimo Brother sounds way less homo."
The hand that you use to masturbate with. It can apply to males or females.
Person: Which hand is your buddy hand?
Me: Wtf? ....My right hand.