As Kelsi went to stand up to check a different box she stumbled backwards.
Meanwhile you saw the butt coming closer to you, and started running. seeing that the shorts were only half way up if you didn't make it you would be hit by her bare butt.
"Woah." she said as she landed on the floor. hard enough to stick anything on it too her butt, while her cheeks are pressed together enough to trap anything inside it.
But where are you?