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a mental filter that activates when someone is spewing out utter bullshit, causing you to zone out and not pay attention.
"dude, did you hear him say all that shit about you and your friends?"

"Nah, i had my fuck you filter on"

OR

dad "were you listening to me?"
child "Nah, my fuck you filter was on. can you repeat yourself?"
by noxxema May 03, 2010
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