Looks like Kimi has inherited a little of that good old Finster clumsiness.
I can't have fun at Kimi's expense for a change?
Hijinks aside, this is actually one of her moves, the Fierce version of her 'Order Up!' move. Ordinarily, Kimi will run forward and hit the opponent with the smoothie blender in her hand, but the Fierce version causes her to fall forward and slide with the move. It hits low and off of the ground, and the Assist version is great for relaunches (though a little timing is required since it comes out a bit slow.)
Kimi Finster (c) Klasky-Csupo INC
Art by oh you know who. Me.