slang To experience an extreme physical reaction to some narcotic, especially cocaine or amphetamines. He kept sweating and grinding his teeth, pacing back and forth as his eyes darted around the room. I knew in a second that he was overamping on speed. A: "Oh my god, it felt like I was going to have a heart attack!" B: "You just overamped a little bit, dude. Try to take deep breaths and drink some water."

slang Experiencing an extreme physical reaction to some narcotic, especially cocaine or amphetamines. He kept sweating and grinding his teeth, pacing back and forth as his eyes darted around the room. I knew in a second that he was overamped on speed. A: "Oh, god, it feels like I'm going to have a heart attack!" B: "You're just a bit overamped, dude. Try to take deep breaths and drink some water."