Also, OTPTN (On The Piss Tonight)
and SOTP (So On The Piss)
and lastly, NOTP (Not On The Piss)
"Its Friday, I'm getting fucking rebecca blacked."
"NOTP, I have to study"
HSC IS OTP!
The OTP is usually given in a percentage value, and refers to the percentage of trains that were "on time". Whether a train is on time or not depends on how long the route is. A train from Toronto to New York City has about 10 minutes leeway, but a train from New York to Florida would have to be about an hour and a half late before it was officially considered "late" in the books.