The act of inserting one individual's penis into the urethra of another individual, for the purpose of sexual stimulation and pleasure. The foreskin of the receiving penis is then stretched snugly over the other individual's genitals. Considered a very high-risk/high-reward sexual maneuver.
Jack: hey John why are you limping?
John: I got into some country docking with Nick last night, and now my dick is on fire!