flatulance

A Norman medieval weapon that was popular for a short time. It consisted of a hardened spear forged with an inner core of rancid anal vapor. If a foe managed to defeat a knight and break his spear, the encased, aged vapors were designed to bring him to his knees. The weapon lost favor when armies began invading Mediterranean countries where the stench from the B.O. overpowered the soured vapors.