Short for On The
Piss, slang for the
act of getting drunk.
Also, OTPTN (On The Piss Tonight)
and SOTP (So On The Piss)
and lastly, NOTP (Not On The Piss)
"Hey bro, are you OTPTN?"
"Its
Friday, I'm getting fucking rebecca blacked."
"OTP?"
"NOTP, I have to
study"
HSC IS OTP!