Trip-trap

First of all came the youngest Billy-goat, and was going over the bridge. Trip trap, trip trap, went the bridge. "Who is that tripping over my bridge?" shouted the troll.

Ramona trip-trapped joyfully all the way to the parked car, and when she reached home she trip-trapped up and down the hall and all around the house.

Her lips parted, Freeman was suddenly triptrapping, no, she was triptrapping him, and then they were triptrapping together […]