Doing something unsolicited and extremely unwelcome to another. Additionally, wise advice that every heterosexual
male in a committed relationship
should heed. Also abbreviated as dsydimb.
This phrase arises from the bewildering and hostility-invoking belief that a girl will get turned on
and want to have sex if her partner sticks his erect dick in her back while she is trying to sleep. For unknown reasons, all heterosexual
males engage in this behavior with their significant other
and seem not to notice or ever learn that foreplay
or some other less aggravating tactic would actually be far more effective.