You know you're in overdrive when you haven't had any sleep in a long time and suddenly your fatigue is taken over by this crazy ass energy that makes you act stupid.
Jeremy: "Hey, what's up KJ Can you pass me some more of that KD?"
Karl (who hasn't slept in days):"uhhh hahahaha what the fuck? haha i'm going crraaazyyyyy"
Jeremy:"DAmn man.. you must be on overdrive"