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A little goblin who watches you sleep, and bites your toes at night. They are sassy, grumpy, and spiteful. But you love them anyways.
Friend 1: I got NO sleep last night, my pet kept biting my toes!

Friend 2: Sounds like a Bun Bun
Bun Bun by strawberryloverrrrr June 18, 2025
n. A switchblade-wielding mini-lop rabbit who features prominently in the webcomic Sluggy Freelance. As of 12-7-2003, Bun-bun is reluctantly serving as the Easter Bunny.
"Bun-bun: Time to die, Nerd-Boy!"
Bun-bun by JohnWWells December 7, 2003
KA-CLICK
see sluggy or visit sluggy.com
Time to Die, Nerd-Boy KA-CLICK
bun-bun by Uncle Jim June 8, 2004
v. To inflict wanton violence on a semi-innocent. (Sluggy fandom)
"He Bun-bunned that telemarketer but GOOD."
Bun-bun by JohnWWells December 7, 2003

bún bún 

A female with a good looking ass however it isn't rather large in size.
Oooooh daaaaammn she got bún bún
bún bún by bunbunluva May 29, 2022

Bun Bun Girls

Bun Bun Girls is a group of childish and cringe ROBLOX hackers. In order to know if you have encountered a Bun Bun Girl member, they will have the word "bun" in their username. You can easily avoid them just by not adding anyone with the word "bun" in the name. Even ROBLOX has taken concern into the matter and no normal person can have the username with the word "bun" in it. The Bun Bun Girls have a victim list of Youtubers. However, despite being a hacker who can completely ruin one of the games in ROBLOX, they are quite childish for one. For example, whenever somebody calls their group cringe, they get mad and try to hack that person.
Sharkblox: This hacker group is cringe af!
Bun Bun Girls: Your the next victim.
Bun Bun Girls by riggggged December 21, 2020