From "The Quiet Man"

"Red Will" Danaher:    I'll count three, and if you're not out of the house by then, I'll loose the dogs on you. 
Thornton:    If you say "three," mister, you'll never hear the man count "ten." 

The relevant part starts at 0:45:30.

I remember me and my Dad having competitions to see who could remember quotes from our favorite films. This was always one we would use.