I’ve seen a handful of TS as that describes themselves as “morbid”… can anyone elaborate on what they mean by that? I wasn’t sure if that was some sort of sexual style or genre that I’ve never heard of? Or if it was a code for providers who are HIV+.

Morbid is a term used in other countries that would be similar to the terms kinky, naughty, dirty sexual acts in the English language. So if someone is using the term Morbid on their profile or ad, it tells you 2 things; 1) English is probably NOT their first language. 2) They're trying to convey that they offer kinkier or naughtier than average services. However, you have to also consider that sex with a trans person is often already outside of "typical" or "normal" sex. So, it's good to try and define what it means for them, what they may offer and what they don't.    

Ive seen that too. Thats so funny