Maybe you just got a bad sack of weed that time. Maybe that's all he could get his hands on and figured it's better than nothing.

I've come across some bad bags in my time that sold for the same price as the usual good stuff. It happens and sometimes a bad shipment comes along.

Hey, it only happened once. I'd buy from them again, but if the bad shit keeps coming again and again, then find a new source, but buddy could have just got a bad shipment come through.