"I told you."
"I tell you what, one time I ate 5 gallons of ice cream in one sitting" - Gary Whittaker
"I was at one time, the fastest man in Ohio...I tell you what, was the fastest white guy down at state." - Gary Whittaker
Frequent famous users include Cris Collinsworth and Hank Hill.
"I tell you what, the Seattle Seahawks came here to play tonight."