This phrase is generally only used by Cornish (Cornwall, UK) people- Something or someone is said to be “as rough as rats“. Alluring to having an unkept nature about it or them.
Person 1: Alright me fucker, hows you? ("Fucker" used as an affectionate reference to a friend, this is common in Cornwall)
Person 2: As rough as rats. I think I got the dreaded lurgy.
Person 2: As rough as rats. I think I got the dreaded lurgy.
by JamesofBlakely March 17, 2022
Get the As rough as ratsmug. by ratwithafatty February 23, 2022
Get the jealous ratmug. 
by Jacobo47 April 5, 2025
Get the Rats-A-Millionmug. The Definition of rat is.. Aj Hampton
Aj loves to rat people out
by Saint Regional police October 21, 2020
Get the Ratmug. 