jump hump

Etymology
From 🇰🇲, as a form of.

Verb

 * 1)  To soak (have penetrative sex without hip thrusting), typically on a bed, while another person repeatedly jumps close by so as to cause the penis to move back and forth inside the vagina.

Usage notes

 * The term is chiefly used in reference to Mormons engaging in premarital sex, who purportedly believe that hip thrusting is a necessary aspect of sex which can take one's virginity.