(noun)
Refers to an ass that is so phat, everyone
in the room takes notice. You can't hide a dumptruck, you just gotta
appreciate it. Dumptruck booties often jiggle while walking, are noticeable under any kind of clothing and attract the attention of masses.
Most notable when wearing skinny jeans, yoga pants, leggings, thongs or better yet; nude, a dumptruck is often perceived as very
attractive and sexy.