When you double press the 'last button' on your TV remote control to check the last channel you were on or to see what's going on in the other show.
Person1: "Man, do you remember what we were watching? I just blanked."
Person2: "i'll check during commercial, hold on."
Person1: "No. Do it now. Last blast."
Person2: "i'll check during commercial, hold on."
Person1: "No. Do it now. Last blast."
by amazing0187 September 17, 2010
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Get the megatron blast mug.The overly messy explosion of semen, sperm, man juice, etc. all over the face of a woman who has just given a guy head. A cock-gun blast generally gets in the hair, eyes, nose, mouth, and just about anywhere you can think of.
Some whore was lickin my giggle stick and she told me to tell her when. I timed it just right that she pulled away and got a full-on cock-gun blast.
by Otis May 13, 2005
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