The act of cockblocking yourself through talking to much, saying the
wrong things, acting really
creepy, etc., effectively negating any sexual attraction anyone might have had towards you. (Akin to shoot yourself in the
foot) The likelihood of shooting yourself in the dick is in direct correlation with the amount of alcohol you consume.
Person A: Wow, I thought Shreyas was kind of
cute, but he keeps texting me about how I'm basically the personification of all his fetishes.
Person B: Holy
crap, that's so
creepy. Way to shoot yourself in the dick.