rough as a badger's arse
Adjective: Very rough, either literally, as in an unshaven gentleman's chin or figuratively as in uncivilised or things or behaviour.
"The people who moved in next door have parked their tarmac wagon across our drive again and stolen all the apples off our tree."
"Good gracious, they're as rough as a badger's arse."
"Good gracious, they're as rough as a badger's arse."