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This is a phrase used to give self assurance and confidence. It actually means "I know"
You and I both know that Cindy doesn't sleep around.

You and I both know the builders will be finished next week.

The check is in the post- you and I both know that
by Sonny Saint April 23, 2020
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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