From an old experienced stoner:
SOME FUCKER LACED YOUR WEED WITH PCP.
PCP IS BAD AND WILL HURT YOU.
My one friend went into seizures and now has lifelong epilepsy. Two others won't ever smoke weed again because of PCP poisioning. It's poison that comes out of electrical transformers. Don't ever do it and go kick the MF ass that gave it to you.

To all the pieces of shit that sell this shit:
Karma, Karma, Karma come back to you hard.