Similar to a blumpkin, a blumpkin stacker is when one man is sitting on the toilet and taking a shit while giving anal sex to another man, who is in turn getting a blowjob from another man. The blumpkin stacker can also involve more than 3 men with the other men simply stacked on top making an anal sex chain
When one conquers a Wal-Mart Superstore by receiving a blumpkin in every stall in the bathroom. This task must be completed in one day and every dump cannot be flushed so they are all on display. Hence the name "dealership".
Jacob: "I gotta use the restroom bro."
Cole: "Your going to have to wait, Micah has a Blumpkin Dealership here."
While a girl is giving you The Blumpkin (Taking a shit on the can while receiving a blow job), your stomach becomes sour and end up vomiting all over her hair. This can be caused by excess drinking (blumpkin salad w/ italian dressing), or food poisoning (blumpkin salad w/ bleu cheese).
Jake: Dude, I gave Krista a BlumpkinSalad last night with tons of dressing.
Matt: No way, what kind of dressing?
Jake: She had the bleu cheese, we went to a chinese buffet.