A dumphump occurs when you bang a chick while you're taking a dump. Shitting, wiping your ass, and then banging while sitting on the toilet is not considered a dumphump. You have to be in the process of shitting while banging for it to be considered a true dumphump. If you can time it out so that you blow a load as a huge turd is coming out, that feels great. A dumphump does not have to be performed on/over the toilet. You could fuck your girlfriend from behind and shit on your bedroom floor while doing it, and that would be considered a dumphump also. Basically, if you're shitting anywhere, while banging a chick, that is a dumphump. It's a little known fact that 32% of women have more intense orgasms when they are breathing in the smell of shit. If you haven't tried the dumphump yet, try it soon.
Todd: "Did you nail Rebecca yet you dirtbag?"
Ron: "I did more than bang her little guy, I dumphumped her at that frat party."
{dum-fuss} noun, 1. A person that is extraordinarily stupid 2. A person that is socially inept, especially with regard to the opposite sex 3. A silly person - to the point of being revolting.
Dumphus actually thinks that "Chicken-of-the-Sea" is chicken.
Dumphus ain't no operator - he tried to get her number by talking about his remote control helicopters!
Dumphus eats his/her snot and licks his balls/twat regularly.