An adjective describing a person or thing as "dirty," "filthy," as being outside the norms of society, or as lacking in any sort of decorum whatsoever.
"Those kids went to see the movie 'Rent,' but they've never seen the play, those classless fucks."
"The mustard stain on Bill's v-neck t-shirt made him look completely classless."
when a bitch knows she's a bitch but still is classy and sassy. a classy ass bitch also doesn't give a fuck what you think and is gonna stay a classy ass bitch no matter what kind of shit hoes and man whores put her through.
Someone who exudes so much class (i.e. maturity, intelligence, poise, worldliness, some stereotypical components of being a WASP, etc.) that he/she is immediately respected and noticed for his/her class. This level of class is also almost completely natural and effortless. A classmaster's class is constantly pointed out--it is that noticeable.
May also be used sarcastically to mock someone doing something totally not classy.
Maggie: Did you know Elizabeth's parents have been feeding her pâté since she was around 5 years old? She's also fluent in French.
Andrea: Yeah, and she wore a pencil skirt and blazer to school today. What a classmaster.
Katie: I'm gonna wear my sneakers with my dress because I don't feel like wearing my flats.
Rebecca: OHEMGEE, you're SUCH a classmaster!