This girl named Melissa is probably one of the coolest Melissa's you'll ever meet, so when someone hates on that Melissa, generally you need to come up with a name for those haters for that one specific person, so if you're gonna hate on Melissa, you're melous.
Don't hate on the best of the best.
GTFO other loser Mel's.
"Hey look it's Melissa, ehhh I'm so melous right now"
"Why are you so melous?"