eating muff - Putting your mouth on a woman’s private area. People use it

Putting your mouth on a woman’s private area. People use it as a mean insult, like when they say you’re a muff eater to make you feel like a loser.

My teacher said, 'You’re a muff eater, and that’s not a good thing.'

My friend’s mom said, 'You’re a muff eater, and that’s not a good reputation.'

My dad called my uncle a muff eater when he was flirting.