A shortened version of grody, meaning gross, disgusting, icky, poopy, or any other word you can think of meaning distasteful or unattractive. It can also be used to describe a grody person, such as a hobo, a really ugly stripper, your ex-boyfriend, a really annoying president, or any random person you may see on the street that you'd like to casually make fun of with your friends.

Gro-gro is essentially two words, not one, which are linked together by a magical hyphen. Gro-gro can be written with or without the hyphen, but using the hyphen ensures that saying 'gro' twice is not a typo, an indeed purposeful.

'Gro-gro' is © to Befera, because she made it up while at camp.

When you in school and you have a mad sesh wit the lads and the ops (teachers) come over in the room and you burst out laughing saying oi bruv where the grogro at. Subsequently the teachers are bamboozled and leave the room. You can now continue vaping

Instead of say that's gross!

I say "oooh thas grogro"