Bumpy hump

The bumpy hump!

The new speed breaker was a hump,
Unaware, on his cycle did he pump!

The hump made the bicycle jump,
In a moment, him, it did dump;

On the solid, large, flat stump;
Of a tree in the nearby clump;

He howled in pain like a trump,
The fall had badly hurt his rump!

No fractures, since he was so plump!
All the same it was a real bad bump!