Teen slang? Thicc has been around online since around 2010, and IRL for even longer. That means anyone who was a teen when it became popularized is pushing 30 now.
How did you gather she's offended from that single message? I don't see any words suggesting that. Perhaps you're overly defensive right now, and one might say, offended that someone sees things differently to you.
The term, originally spelled "thick," dates back to the 90s and was used in black culture in reference to women, Dictionary.com says.
Can we stop this "black culture" bull shit too? At this point, it's just American culture. Why are we segregatting a questionably sexist term now?
Stop categorizing every little thing as "black" or "white". An American started the term for a specific purpose, and Americans still use it today with a broader application.
Fucking right? I grew up in schools where urban vernacular was very popular, so it's interwoven into my casual speech. But SJW's would have you believe I'm culturally appropriating lingo because of the color of my skin, despite the fact that it's part of my upbringing. So much of modern anti-racism is just moar racism.