Equivalent to "you're welcome." A way to let a person know that the task you completed was not a problem and that you were happy to do it.
Woman "Thank you for helping me."
Helper "Don't mention it!"
by hop_scotch July 24, 2009
A popular phrase of avoidance borrowed from British sitcom, Fawlty Towers.
"Have you taken out the garbage?" "Don't mention the war."

"Are you enjoying your meal?" "Don't mention the war."
by manuelsdaughter December 13, 2009