Bumpity

"There he goes!" cried his delighted master, throwing down the poker and snapping his fingers in an ecstasy — "Bumpity bump! bumpity bump! Hope he won't stop at the landing-place — no — off again! All stone steps!

Source: wiktionary

Daria closed her eyes, exhaling slow smoke through her nostrils, listening to the bumpity sound of wheels on the polished cobblestone unevenness of the street.

Source: wiktionary

The rhythmic bumpity, bumpity, bumpity bump of a pissed academic with arthritic knees falling down the stairs, ricocheting between wall and banister as he went.

Source: wiktionary

Bang, bang, bumpity bump, I hear as spruce cones fall on the metal roofing of my woodshed.

Source: wiktionary