RING KING!
Gotta get this one out of the way first - it's probably the most well-known unintentional sexual moment in classic videogames. "Ring King" for the NES started out as just an average boxing game. You begin by training for fighter in power, speed, and stamina. After that it's into the ring you go for your first round of good ol' button-mashing fisticuffs. And that's when it all starts to go downhill.