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To get stoned by hot boxing your attic
Friend: Dude, we need to get high without my parents knowing
Me: Let's go to your attic and Ann Frank It
by UTJoe January 27, 2011
to make it appear that no one is home in order to avoid someone; to hide out.
"oh fuck the cops are here"

"yo hit the lights we gotta Ann Frank it."
by Nelsface February 01, 2009