From True Grit, undoubtedly the worse film John Wayne ever starred in, imo:

LeBoeuf - You squirrel-headed bastard!

Rooster Cogburn - Backward. I always go backward when I'm backin' away.

Mattie Ross: They say he has grit. I wanted a man with grit.

Col. G. Stonehill: Well, I suppose he has that. He's a notorious thumper. He's not a man I would care to share a bed with.

Mattie Ross: Nor would I.