that is referred to as a coco puff and basically it just gets you extremely high. if you do it for a prolonged period of time you can suffer brain damage, and it doesn't take long to become addicted to coke especially if you're smoking it. but I really doubt a dealer decided to waste some of his coke to get you extra high for free.
some people call it lacing a joint down here, it gets people spaced and is apparently a very strong high, but smoking coke makes it the most addictive it can be. although it could have had coke mixed, it's a more expensive drug, so cutting weed down with coke isn't something a normal dealer would do, it could have been the white thc you saw on the weed, lots of thc would get you more stoned than an average dealSore tongue smoking weed?
Or your mum sucked me off?What happens when you smoke weed then inhale helium from a balloon?