1 definition by Dyna-Mo Chen

A portion of an item a father is entitled to when he buys something for his kids, usually something they pestered him to purchase or if they ask for his assistance to open the packaging. This is normally applicable for food items.
"Here's your damn potato chips and I opened the bag."
*Reaches in for a handful*
"Minus Dad Tax."
by Dyna-Mo Chen May 27, 2016
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