A girl referred as either a sexy or stupid slut. Depending on how you use it in a sentence. A guy referred as a twim is either a stupid or sexy man whore. Again, it depends on the use of the word.
John: did you see that girl last night?
Lance: yah man! I wish I could've taken her home with me. She was such a twim!
Jenny: ooh that Larry makes me mad! He cheated on me! He was dumb enough to leave his phone out!
Lacey: what a twim!
A female slut that is either a sexy or stupid. Depends on the usage of the sentence. When calling a male a twim, it means a man whore that is stupid or sexy.
Lacey: That guy that walked by just tripped. sooo stupid. I'm glad his looks make up for his actions!
Jenny: He's such a twim! The girls at the office will be jealous!
Lance: Is it hot in here or is it just that girl over there?
Jack: Thank God she's not stupid! But look at that tramp stamp! she's a twim alright!
Twim is a noun. It is also an acronym for "The Woman I'm Marrying". Twim can be defined as (1) A woman with whom one is romantically involved, with the intention of marrying her.
(2) A female partner in a serious, long-term relationship that is intentional about its marriage goals.
It is what a man who dates to marry calls his partner, prior to her being a fiancé. The emphasis is on the intentionality of dating to marry.
"After going on several dates, he finally found his twim and is set to ask for her hand in marriage in December."