"She has dumps like a truck, truck, truck, truck."
People usually assume one of two things. Either that just means the woman in question has a big ol' booty, or her bowel movements are alarmingly bountiful. Using context clues from the rest of the song (like the SAT prep course taught me), we can assume the former.
But, we've never had actual confirmation from the dude himself. Till now. In an interview with Huffington Post's Priscilla Frank, Sisqo cleared the air.
"What I was really referring to was ― a dump truck when it backs up, it’s like, ‘beep, beep beep.,’" he told Frank. "So, ‘she had dumps like a dump truck’ is, like, when girls do a booty dance move and they look back at their butt. She’s like a dump truck back-back-backing it up.”