A Power bar is a slang term use when one has consumed a large quantity of Vodka and Red Bull and is erect for sexual intercourse. The erection becomes very strong, therefore named Power Bar. After large consumption of alcohols like beer and wine, most men find it very hard to get an erection. The Vodka makes it easier for men to sleep with any woman regardless on how she looks, and the Red Bull contributes to the stiffness of the erection which would normally not be attainable. The erection is known to last for several hours very much like the effects of Viagra although more expensive and with more health risks.