What is Rerr-terr-terr?

A made up word, when you don't have the vocabulary to explain exactly what you mean.

"I was in the pub and trouble kicked off, so I had to step in... Rerr-terr-terr, rerr-terr-terr, rerr-terr-terr, got arrested for being a batty fish.

Rerr-terr-terr - meme gif