I think the questionner knows what she is talking about. This has all the hallmarks of a teaser question. She knows that there is something else other than just 'slepping with' someone (literally rather than figuratively in the sense of having sexual intercourse). Her question clearly shows that she is aware that there is something else other than just lying side by side on a bed. Still, I may be wrong, and the question may be genuine. In which case, it shows how ignorant someone may be about sex.