"Nothing personnal Gorilla, but i have to leave."
"ARRRRRRRRH"
"Don't arr on me, i could have eaten you. Bye !"
"ARRRRRRRRH !"
And here he goes, alone on his raft...and start to starve just 3 hours later.
Conclusion : "ARRRRRRRRH" means "Bring coconuts on your raft, idiot !"