1) Thinking you are right and then immediately finding out the imminent truth. This may happen when you are alone, or in a group.
2) The act of "shredding" one's self. (See term shredding)
Richard: I can't find any of my fucking xbox controllers. Seriously, I think someone came in here and stole them.
Al: Shouldn't they be in here?
Richard: Yeah... (eventually pulls back curtain covering the windowsill, revealing the controllers)
Al: Is that them?
Richard: Yeah...................."Self Shred!!!"