When a person with normal IQ levels experiences a brief moment of mental retardation. The term was "coined" in New York.
Fake ticket scalper: This offer will only stand for the next 60 seconds...
Tracy: But they are only $5!! The guy even TOLD me they aren't fake, etc. etc. etc.
Me: What the HELL is wrong with him?
You: Don't worry hes just having a disel moment.