grum grum

grum grum is a multi weight ufc champion and works for wwe and is known to be immortal from russia and ireland

"wow, grum grum

grum grums

Usually Pajamas. can also be raggedy clothes. Comes from the "grungie" look that the clothes give the person.

Example:

*mother* "Change out of your grum grums dear. You look most unpresentable.