oral affect opera

A popular phrase that indicates that if you have oral sex before an opera, it will affect the opera in one way or another. You don't know whether it will be good or bad.

srstgrsg: "pleas suck on my FAT CHODE before this opera... now!!!!1!111!" skigrbd: "HEY don't u know that 'oral affect opera?' lets break up NOW." srstgrsg: "no splats"