“I like big butts, and I cannot lie.”

Source: Club Dead

Lance Armstrong Admits to Doping, 'One Big Lie' http://online.wsj.com/article/SB10001424127887323468604578248582288523660.html, as reported in the Wall Street Journal, January 18, 2013.

The earliest source of this quote was a famous anecdote in The Life of George Washington, with Curious Anecdotes Laudable to Himself and Exemplary to his Countrymen (1806) by Parson Weems, which is not considered a credible source, and many incidents recounted in the work are now considered to have sprung entirely from Weems’ imagination. This derives from an anecdote of Washington, as a young boy, confessing to his father Augustine Washington that it was he who had cut a cherished cherry tree.
Variant:Father, I cannot tell a lie, I cut the tree.
Misattributed, Spurious attributions

Portrayed as the words of the young George Washington, confessing to have damaged a cherry tree in Life of Washington (1800)

As quoted in Go for the Gold: Thoughts on Achieving Your Personal Best (2001) by Ariel Books
Context: I swing as hard as I can, and I try to swing right through the ball. In boxing, your fist usually stops when you hit a man, but its possible to hit so hard that your fist doesn't stop. I try to follow through in the same way. The harder you grip the bat, the more you can swing it through the ball, and the farther the ball will go. I swing big, with everything I've got. I hit big or I miss big. I like to live as big as I can.

Source: The Angel Experiment

After fighting Axel Schulz in 1995. http://observer.guardian.co.uk/osm/story/0,,1053352,00.html

The Star-Ledger staff (May 2, 2003) "It's a beautiful year, again, for this Oscar-winner", The Star-Ledger, p. 62.