Bungee Jelquing

Bungee Jelquing is the act of letting yourself hang from your ceiling/elevated surface from an industrial grade bungee cord, wrapped around your penis tip. Doing this will effectively tear many segments of the shaft's tissue, causing your penis to grow back longer than before after healing.

Graham: Dude, I think bungee jelquing is paying off, i've gained four inches in the last year!

Sean: Oh man! I think I gotta try this bungee jelquing thing out for myself!