The act of insertion of a small projectile (e.g., peanut, dried bean, apple pie-flavored jelly belly jellybean) into the male urethra through the tip of the penis for the purpose of increased stimulation during masturbation and the added effect of rapid projection upon ejaculation.
Dude! Red just knocked over your mom's picture! Yeah, the one on the other side of the room! Doin' the Roman Candle, how else?