A crude yet surprisingly effective method of contraception in which a male ejaculates into a female and makes her do jumping jacks afterward until all of the semen has exited her body
Jane was out of bc pills so I had to hit her with the ole dump n jump last night!
The dump n jump is employed when you are low on time and still need to poop and shower. It’s when you turn on the shower to get warm and in the time it takes to warm, you take a dump. Immediately when the dump is done you “jump” directly into the shower without wiping.
Friend:”Hey where are you? The party starts in five minutes.”
You: “But I still have to shit AND shower”
Friend:”just use the dump n jump”