A fork of Rural Dictionary
"Yes", "I agree" or "I hear you". It mimics the humming sound you make when you nod your head in agreement.
* Hey dude, can I ask you a question? - mm * Ok, here goes...
mm = middleman a middleman is a person that holds funds/secures the item in a deal of 2 persons
"How much for this 3letter insta" "$250 btc" "That sounds sketchy, can we use a mm?" "Yes, u pay the mm fees" *Seller gives the item to the mm* *Mm confirms that he has the item and secures it, tells the buyer to send the btc* *Btc is received* *Buyer gets the item* Deal is done