The feeling of utter doom after a heavy night on the booze. You fear you may have embarrassed yourself beyond redemption. Or done something you will live to regret.
Oh my god I have got the doom! I don't rememeber much, What did I get up to last night while drunk?
You stand on a desk or a table and make the woman get on the floor on her knees. Then you grab your dick by the base and jump off the desk/dresser and yell,"THE DOOOOM HAMMMMER" Then hit her square on the forehead with your dick.
Occurs after having played various mods of a video game for a long duration of time that reuse the same assets; making you think, after a period of time, that you've played another unrelated, separate mod already, when you haven't.
"I could've sworn I played this already, no?", "I'm developing The "Doom Wad" Effect"