clean as your mother's reputation

Basically, this term means that you can't get something any cleaner (or purer) than it is. It's also meant as a compliment by saying that somebody's mother is not a skanky whore or streetwalker. This term appeared in the young adult edition of the novel adaptation of the 1979 sci-fi thriller"Alien".

George the janitor tidied up the restroom so well it's not simply spic and span, it's as clean as your mother's reputation.

clean as your mother's reputation by I Saw U2 Live Twice May 17, 2007

clean as your mother's reputation

deadset my heart and soul, clean as a kiwi cranny-bum

choice bro,now that's as clean as your mother's reputation

clean as your mother's reputation by S & A June 5, 2007