An error (or slip) that occurs whilst typing in the URL box and one unconsciously begins typing in the URL of one's favorite porn site that leads one from a simple wikipedia search to a 3 hour jerkoff session. Like the Freudian slip, it is usually caused by an interference of some unconscious wish, conflict, or train of thought.
Damn you pornian slip!! I just wanted to simply check my email and now I have 5 tabs of pornhub.com opened!!

It is studied under the division of psych called pornanalysis and pornian slip is often referred to as parapsexis.
by UP AND ATOM September 1, 2011
Get the pornian slip mug.