Saddlebacking - the term for the phenomenon of Christian teens engaging in unprotected anal sex in order to preserve their virginities. Named after Saddleback Churh, home of the Reverend Rick Warren, who is a proponent of abstinence education, the "sex ed" that has convinced so many Christian girls and boys that buttfucking isn't actually sex.
Saddlebacking - After attending the Purity Ball, Heather and Bill saddlebacked all night because she's saving herself for marriage.
The fresh mix of lube, blood and fecal matter that is the by-product of nubile Christians engaging in unprotected anal sex to preserve their virginity.