butt first
- backwardsToward what's behind
- rearBack portion or raise
- behindAt the rear
- bottomLowest point or underside
- tumbleUncontrolled rolling descent
fall · stumble · crash · landing · cushion · thud · plop · seat · backside · reverse · tailbone · oops · clumsy · slip · drop · impact · bounce · sprawl
orientation/direction of entry
butt firsthead first
Crown entering before body
headfirst · face first · feet first · forward · diving