The feeling you get after masterbating to nasty porn and then immediately say to yourself "what the hell am I watching?"
Oh yeah, do it, keep going, yes, yes, here it comes....ahhhhhhh. Holy crap this website is disgusting, what a cum down.
by Trotterbotterfofotter April 09, 2007
Can you define these popular missing words?
When you've finished having sex, look up, realise what you've down, hate yourself and demand that she leave.
So I shot my load on her face and it felt amazing, but a few seconds later the cumdown kicked in and I chucked her out the house and cried myself to sleep.
by ts9195 December 20, 2010
You're severely hung over. The only way to make yourself feel better is to have a wank. After you 'cum' you have a proper cum down and feel horrible having physically exhausted yourself and having been left depleted.
Crikey I feel awful. I just had a proper cum down dude!
by TheFlyingBadger April 15, 2015