Created when a woman is on her knees and forearms sticking her ass in the air thus making a 'stump' ready for pumping by her male partner.
"Dude, last night was awesome. We went back to her place and the next thing I know, she takes off her clothes and makes a pump stump right in the middle of the living room floor. Rug burns on my knees are killing me."
Used in a manner to describe dislike or anger. In order to properly administer the "bad dog" verbiage one must first make a hand gustier like you are pinching or picking something up using your thumb and index fingers with the middle, ring, and pinky fingers extended and making a shaking motion from right to left like you are shaking something and make the statement BAD DOG! (Hand Gustier is optional)
**You just saw a very heavy person in a less than attractive speedo or you kid just knocked over a glass of water, or you saw something that was really bad**
"Dude wearing that speedo when your 5,000 pounds thats a BAD DOG"