Two people who, by some divine intervention, always feel the need to pee at the exact same time.
Person #1: Ugh, I had too much beer, I'll be back.
Person #2: Where are you going? I'm gonna go pee.
Person #1: OMG I need to pee too!
Person #2: You're my Pee Buddy!
Mostly used in the military for personal going to urinate but can not do so without another person to cover his 6.
PVT Joe:Drill Sergeant can I go to the latrine?
DS: Do you have a pee buddy?
PVT Joe: Umm, Umm, Umm
DS: (shouts out loudly) WHO WANT"S TO BE PVT JOE'S PEE BUDDY
The assigned friend who helps you in the bathroom when you are too drunk to do your business by yourself.
Amy: Who will be my pee buddy tonight?
Someone who shares the same elimination cycle as you and whom you see regularly at the adjacent urinal.
Also: Bowel Buddy
Hey, Frank, you're becoming a regular bladder buddy since you passed that kidney stone.
Someone who follows you into a bathroom to continue a conversation and keeps on talking while you're doing your business
Liz is like a total pee stalker she totally followed me into the loo and wouldn't shut up it was so bad I got performance anxiety
Another word for Bromance or something that describes a homosocial bond between guys.
"Hey Hector, where's your butt buddy?"
When you have to ask, multiple times, if the reason your toddler boy is holding his penis is if he has to pee. After he continues to hold it for prolonged periods of time ones demeanor turns aggressive.
Daddy: "Hey buddy do you have to go pee?"
Kid: "Nope, I am fine...."(goes off to play)
**10 minutes later...still clutching his pee-pee**
Daddy: "Dude, if you have to go pee, let's go now before the food comes...I don't wanna have to give you a holdinscoldin in front of the entire restaurant"