Towel (n.) Named after the worst character ever created on South Park, “towel” refers to a person who is perpetually strung out on a certain prohibited substance whose active ingredient is THC. Said person is also uncooperative and enjoys spewing racial epithets and homophobic slurs. Synonymous with a female cleaning product.
Man, that guy is totally a towel.
"Yo, dudebroski, wanna go check out some chicks at the club?"
"Aw hell naw, man, don't be a towel."
"Yo, who you calling a towel, you tool?"
... (Continue on with more insults)