Sounds like the weed they took was spiked with something else to cause all those symptoms. Usually an overdose of weed manifests as a panic attack or strong feelings of paranoia.
According to WebMD, these are the symptoms of marijuana overdose:
High levels of anxiety
Panic attack
Rapid heart rate
Difficulty conversing
Poor coordination
High or low blood pressure
Nausea and vomiting
Extreme confusion and memory problems
Paranoia
Hallucinations
Yes…absolutely…thinking you are going to die…inability to hold a cell phone and dial it…inability to remember that your son is in your contacts…inability to remember how to spell your son’s name…throwing up on your cell phone…swearing there was something moving in the vomit as you are cleaning it up…