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1.
The time when an individual is surfing internet porn.
Oh...it must be porn o'clock, my room mate is on his laptop.
by philanewbie August 05, 2010
 
2.
That time in the evening when the internet slows down because of all the married men starting their evening's porn viewing
"Dammit, the internet's slow as fuck!"

"Porn'o'clock"

"Fuck it is."

"Fuck it, wanna fuck?"

"Yeah, I won't get anything done online now anyways."
by JonathanTM March 06, 2012