The act of inserting the scrotum into an orifice (vaginal or anal) during doggy style sex.
If only one testicle is inserted, it is termed a Lance.
Ted: Ever tried doggy bagging?
Bill: Dude, I totally doggy bagged my girlfriend last night.
Ted: Excellent! One or two?
Bill: One ... I Lanced her.
16👍 14👎