Dental slang for a puscious cist causing obnoxious gasses to be emitted from the mouth. The odour can often overwhelm those around them causing feelings of nausia or excessive acquiescence.
Careful, the guy waiting in room three is an Arus.
A good way to type the word arse but no one will know what you're typing. Also when you say the phrase its quite a lot funnier than saying arse made even funnier when you're old enough to say arse without getting told off, and youre friends think youre being sad, the same result as when you use mummy daddy bone. Also gives the advantage of sounding like youre saying arse in an irish accent.
"ooooooooooooooow!! you got me right in the arus"
"chris Man grow up you're 45, and you're not even bloody irish!"