Definitions by 90OG
Opplmono
When you're losing the game of Codenames and the only way to win is by taking the first two letters of the four remaining cards. If you guess "Opplmono" now YOU WIN!! (And really piss off the other team.) Or you can just make something sexual up and say, "don't worry, I'll show you an 'Opplomono' later." (And add a wink face.)