A hump may refer to a camel's hump containing its fat reservoir or alternatively to the curve on an upper spine that causes a hunchback.
something that protrudes
arch one's back
have sexual intercourse with; "This student sleeps with everyone in her dorm"; "Adam knew Eve" (know is archaic); "Were you ever intimate with this man?"
something that bulges out or is protuberant or projects from a form
have sexual intercourse with; "This student sleeps with everyone in her dorm"; "Adam knew Eve"; "Were you ever intimate with this man?"
arch one''s back
something that bulges out or is protuberant or projects from its surroundings
have sexual intercourse with
round one's back by bending forward and drawing the shoulders forward
