Top Definition
IMSP-Instant Messaging Sensory Perception. A state characterized by answering IM questions at the same time or before they are asked. The phenomenon of answering an IM question before it's asked.
Person1: right
Person2: okay
Person1: I'm done
Person2: are you done now?

"Hey, you've got IMSP. Stop reading my mind" or "Ha! I knew you'd ask that! I have IMSP!"
by Teresa W. & Sheryl C. September 10, 2007

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