fullgrub 

A Fullgrub is someone that exceeds the the normal ,common grubby person in grub stature. They have reached new levels of grub,

Yeh its true, wayno's gone fullgrub

fullgrub by Rale chaddington November 12, 2019

Fillgrubbs 

noun - dingleberries of the male genitalia, usually focused around the gonads, typically white and smelling like an old abandoned gym

Josh had a plethora of fillgrubbs after a long gym session in his fresh white cotton boxers

Fillgrubbs by word masta1 August 30, 2010

Fullgrabe 

Something or someone full of life, mediocre with the ladies or men in fact its quite hard to tell what this person wants. Be cautious though, from time to time they will see it in their best interest to stab you with the "Full"ness of the "grabe" aka tell on you. Don't bother cleaning up anything near it either, it all just gets messed up in the end since a Fullgrabe has a lack in sense of hygiene. Poor social skills and definitely a poor sense of humor.

That guy is so a Fullgrabe

Fullgrabe by Kingclam December 9, 2010