Trashy. low-class; nouveau riche; tourist
Originally a Mexican word used to insult low-class people it's slowly becoming part of the American vernacular because they don't have a word as all-encompassing. It's used as a general insult for someone who you think is less sophisticated than you, regardless of wealth.
Look at all the nacos in Times Square wearing Hard Rock Cafe t-shirts!
Maria-Lupe is such a naca. She only eats lobster when she goes out on a date because she thinks it makes her look classy.
rugmuncher, carpeteater, lesbo, dyke
The female equivalent of a 'cocksucker'. It's not necessarily bad to call a woman a cocksucker, because for the most part, they should be cocksuckers. However, to call a woman a cuntlicker, which obviously means they lick cunts, is like calling her a lesbo-rugmuncher.
A couple of butch cuntlickers fell off their bike in the rain and nobody cared.