3) A 20-year-old male is brought to the emergency department by his family after seizure-like activity. He reports that he was out with his friends and "smoked some weed" about an hour prior to seeing his family. The family reports that when he returned from his friend's house, he was very agitated, hard to restrain, and cursed at all of his family members. 10 minutes prior to arrival, he became unresponsive and had 3 minutes of seizure-like activity. In the ambulance, he was diaphoretic and difficult to arouse but no further seizure-like activity was noted. On your exam, he is tachycardic, hypertensive, and tachypneic. His pupils are 3 millimeters and reactive with mild nystagmus. Which is the most likely explanation for his symptoms?