Two questions:

Why not "I thought that was the answer"?
Why the comma?

Some sites:
http://www.opundo.com/sayagain.htm
http://www.rightwords.co.nz/backnews.html
http://rec-puzzles.org/new/sol.pl/language/english/sentences/repeated.words

And my attempts:

Dr Bill regaled us with stories of how he canned the berries he had had for breakfast.
Tea made by latin dancers could be cha cha cha.
One who dances on tins might say "I can can can can".

Ta. Ta ta.