Clean up good 

a phrase that describe people having a legit grade in collage courses.

Dude1 "Rabbie" did you flunk out one macro biology test ?

Dude2 man , my grades are clean up good on ma whole tests . tests this term are a breeze

Clean up good by Rabbie , Lawrence , nass Qr December 20, 2009

cleans up good 

Usually refers to men. Especially men who don't pay much attention to their looks, in terms of grooming, hair and clothes.
However when they put some attention to it they look good.

Best example is Shaggy from Scooby-Doo. He always looks frumpy, stained, unshaven, slump, but you always

get the feeling that when he needs to escort Daphne Blake to her gf wedding Shaggy after a shave and a nice getup will look good.

Girl 1: Are you crazy you want me to go out with Jonah Hill, yuck
Girl 2: Sweety, he cleans up good and will make you look great on that red carpet

cleans up good by Tim E Wastin January 22, 2014