He's a greaseball of the highest degree, but that's every politician ever.
Slang definitions & phrases for greaseball
greaseball
noun
A dark-skinned, dark-haired person of Mediterranean or Latin American origin; dago, greaser: taking knives away from greaseballs in zoot suits/ This time the greaseball smacked her. They were taking turns smacking her(1915+)
A dirty tramp (1920s+ Hoboes)
A cook or kitchen worker (WWII Navy)
A hamburger stand or concession (1940s+ Circus)
An actor who uses too much makeup or greasepaint (1920s+ Theater)