An Impromptu on Roller Skates

Rumble, tumble, growl, and grate!
Skip, and trip, and gravitate!
Lunge, and plunge, and thrash the planks
With your blameless, shameless shanks:
In excruciating pain,
Stand upon your head again,
And, uncoiling kink by kink,
Kick the roof out of the rink!

In derisive bursts of mirth,
Drop ka-whop and jar the earth!
Jolt your lungs down in your socks,
Oh! tempestuous equinox
Of dismembered legs and arms!
Strew your ways with wild alarms;
Fameward skoot and ricochet
On your glittering vertebrae!