Ok so a few weeks ago I hit up my friend to get me a quarter he gets the sack but says he left it at a mutual friends house. The next day I go to my friend who has my bud. He tosses me the bag and I go how much man. He says I guess 100 I don't think he paid anymore then that. So I give him the 100$ and go on my way. Two days later the original guy to get the quarter tells me I owe him another 20 bucks. I'm like dude I'm not gonna pay you 20 bucks when my friend let's call him Bob said it was 100. I mean after all he sold me the weed. Then he starts going off and how I'm trying to scum him out of his money and shit when all I did was pay the price I was told. So y question to you folks is... I'm I scumming my friend out of 20 bucks?