Findings:
- grimble (user)
- Grumble
- grumble and grunt
- Grumbles from the Grave
- Grumble (user)
- SA-10 Grumble
- grumbles (user)
- SA-N-6 Grumble
If you Log in you could create a "Grimble Grumble" node. If you don't already have an account, you can register here.