Top Definition
A man who leaked news of the Nixon Administration's involvement in the Watergate Scandal to Carl Bernstein and Something Woodward. He has until today (5-31-05) been referred to "deep throat" to keep a secretive identity. (1) To "Mark Felt" someone is to "deep throat," i.e. in a sexual manner. (2) To "pull a Mark Felt" is to leak secret news.

I want to be a lexicographer.
(1) Natasha Miller will finally Mark Felt me durring her normal session of Road Doming that she does while I drive her home.

(2) I stole Calen's Oreos and almost got away with it until Joey pulled a Mark Felt and got me busted.
by Kia (heyxia) May 31, 2005
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