Self Propelled Torpedo Cockblock 

A self caused cockblock, with so much blocking power, it can only be caused by a major act of stupidity; Brought upon by themselves with good intentions for the receiver, but ended up bitting them in the ass. SPTC for short.

Guy 1: "Ha! That creeper just asked the hottest girl at university for nude photos via text!"

Guy 2: "He's got major Self Propelled Torpedo Cockblock now; He's never getting laid."

Self Propelled Torpedo Cockblock by c.NEWBY;m.MANYARD;m.CAMERON May 28, 2010

self cock block

Self-inflicted cock block by doing or saying something so stupid, cheesy, or inappropriate that you instantly ruin any chance of scoring with the targeted girl. The girl will inevitably laugh at you later with her friends

I self cock blocked myself yesterday by telling a girl if she was a new sandwich at McDonald's she would be called McGorgeous. She spewed her drink in my face.

self cock block by Manduzo March 1, 2009

Self cock block

A self (cock block) is when you are in a sexual situation but your nervousness prevents you from gaining an erection.

Todd: You hook up with that chick we met at that concert yet?
Kyle: I was gonna but I was self cock blocked cause she was (a score)

Self cock block by Foreskingamer69 July 24, 2019

Self Block Cock Block(SBCB) 

A man than manages to block his own cock from getting action as a result of being repulsive and/or having no game.

Guy 1: You get it in last night?

Guy 2:Nah, bro. I had a Self Block Cock Block(SBCB) night.

Self Block Cock Block(SBCB) by CSB Fern April 28, 2012