dickride

Etymology
From

Verb

 * 1)  To behave in a submissive, subservient, or overflattering manner toward.

Usage notes
The word alludes to having sex in the cowgirl position, with the sense that the "dickrider" is making an effort to please the other party. In a context discussing actual sex, however, a construction like "ride his dick" is much more likely than one like "dickride him."