He's bad medicine.

He has his old man's temper thet riles up at nuthin' an' never felt a halter.

Wusser'n thet, he's spoiled an' he acts like a colt thet'd tasted loco.

The idee of his ropin' Pronto right thar near the round-up! Any one would think he jest come West.

Old Bill is no fool.
But he wears blinders when he looks at his son.