Word used to describe left over food and food that inevitably escaped the mouth, also includes foods that may or may not have been placed there by owner of beard and food. Food particles and chunks are almost always visible to the naked eye and noticeable to everyone the beard owner comes into contact with.
"Bro I am so hungry you up for some food"?
"Nah man I've been munching on some beard grub I stashed away at lunch".
"Damn. I need a beard".
"Nah man I've been munching on some beard grub I stashed away at lunch".
"Damn. I need a beard".
by taypetes September 30, 2014

Some nerd who's life goal is to spread his seed. Used to play runescape but is now a staff member on a Minecraft server.
Likes to smoke the marijuana and play chess against Bob the Snob and still win.
Likes to smoke the marijuana and play chess against Bob the Snob and still win.
by Jennifer of Doom and Sunshine June 19, 2023

“Did you see that guy jam his finger in that dude’s arse? He was 3 knuckles deep!”
“Yeah, that’s just Josh being a bum grub again.”
“Yeah, that’s just Josh being a bum grub again.”
by Clank clank I’m a tank August 14, 2024

by fgthjk,kjmhngbcvxfetry56ui78l, February 22, 2021

by You moms moms moms mother January 14, 2017

A bub grub is a word you call your girlfriend when you can’t think of a nickname so you just throw some words together such as bub grub, a bub and grub.
by BigBunt69 January 3, 2022

a person who is mischievous and has unclear intentions, a dirty child, someone who is unkept and drops crumbs while making eye contact
by littleween January 11, 2022
