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1 definition by fatti

The expression you get when you inhale the very last tobacco in your filter cigarette. The red-glowing tobacco usually causes the filter to heat up instantly, transfering painful heat to your lips.
Can also be used in a negative term to offend someone:

"Jonnern has a permanent filter face".
"If I had a filter face like yours, I'd kill myself."
by fatti May 15, 2005