Who said "This ain't over till I say it's over!"?

This quote is attributed to Yosemite Sam.

This ain't over till I say it's over! - Yosemite Sam

"This ain't over till I say it's over!"

Yosemite Sam

"I'm the meanest, toughest hombre in the whole dang west!"

"You better watch your manners or I'll blow you to smithereens!"

"Ain't nobody gonna outsmart Yosemite Sam!"

"Life's too short to be pushy-footed about things!"