Interesting that I stumbled upon this comment just now, Sean Stephane Martin.
I’ve got a story cued up to publish sometime in the next few days about young me discovering the joys of receptive oral sex.
See how I just slipped into clinical language there?
It feels better than saying, discovering the joys of sucking a dick.
You’re right to question the use of sucking as a pejorative. It’s rooted in the shaming of people who get sexually penetrated.
The idea is so deeply embedded, though, that most of us probably don’t realize it when we encounter it.
Now, pardon me while I go strengthen the language in my story. ;-)