(n.) The part of you that punishes you for things you wouldn't admit to feeling guilty about. This can be through subconscious actions that fuck you in the ass later, or through giving you especially bad physical effects (hangover, half-baked-ness at school, etc.)
I left an empty beer can on my desk and my pops found it. Damn my subconscience.
I woke up feeling like Courtney Love had given me a working-over with a rubber mallet and Andre the Giant was giving me the Heimlich. Must be my subconscience punishing me for the thing with the beer and the tequila and Cindy and the strawberry jam and the passenger seat that we tore out of that Cadillac. God I hate Thursdays.