Variation of the word Nawmean, which is turn is a variation of the phrase do you know what I mean?
Used when you’re looking for a word to roll off the tongue. Also used to hiddenly slide in the phrase anal, telling the person they’re being a sphincter for their sarcastic response.
Ben: Hey, what am I supposed to do with this rock?
Lawn: You’re supposed to rub it in the air and pretend it does something, nasmeanus?
Ben: “Unicorn face”