I'd rather people actually said "Do you want to come back to my room for sex?"
There is the section of Surely You're Joking, Mr. Feynman with the phrase "you just ask them!", which does endorse explicitly asking people if they're interested in sex. I don't think this is a replacement for understanding and displaying social cues, though.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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