A descriptive word for what happens if
one falls at the top of a hill - or loses
one's nerve - and slides in a vaguely controlled manner on
one's bottom all the way to the end. Also can be used as a verb, as in "ratballing."
I accidently found myself on a black diamond
ski run and decided to ratball my way to the bottom.
As we were descending from the mountain, we ran into a patch of
loose rock, and decided to ratball rather than risk falling.