Verb: The state of a book or magazine after someone brings it into the bathroom with them, generally when dropping a deuce.
Dude, don't put that gun magazine back on my desk, you just red flagged it.
by Captain ASDF December 18, 2008
Can you define these popular missing words?
A married Person. Off limits
Eliana: He was really nice, and really hot, but he was red flagged.
by Brown Eyed Girl May 29, 2005