The act of jousting, with your genitals. Often uses gratuitous thrusting and may cause large red blotches to appear under armpits and breasts. The balls NEVER touch. Often used as a party game for peoples 18th and 21st birthdays.
Tim: Hey jacob, whatre you doing for your 18th?
Jacob: im going throusting
Tim: dude... gay
Jacob: the balls dont touch.
Tim: COUNT ME IN