You probably just got too high too fast Drink water, splash water on your face, take deep breaths and wait until it goes down, then smoke some more to prove to yourself it wasn't laced.
You can never be too careful when it comes to dangerous drugs like marihuana. I happen to own a company that tests marihuana for additives like H, ice, and blow. Sometimes we even find LSD in marihuana. Out of the kindness of my heart I will test your sample for free. Please send your complete sample to me immediately to have it tested. Do not risk your life by smoking something that is filled with LSD. It should take me 1 week to complete testing at which time I will Overnight your product back to you if it is safe.
It had placebo in it, I don't know why I have to keep telling that to everyone. And that wasn't even funny.
Your joke made me ROFLCOPTERBBQSAUCEteh\/\/in5555!1!1!!!111 Coke doesn't burn well unless it's in freebase form. Unlikely your dealer would've thrown that in for free. LSD gets destroyed by the heat. You would've tasted chemical ass flavoring if you had PCP in your bud. Meth and H would have been fairly obvious.