The offer lasts from 2 to 4 p.m. local time at participating Chick-Fil-A locations nationwide, according to the offer's Facebook page.
You'll get a medium waffle fries for free simply by asking to try the new "Heinz Dip & Squeeze" ketchup packet.
Chick-Fil-A, which is calling the event "Free FryDay," says the offer is limited to one order of free fries per customer. More than 60,000 Facebook users have already signed up for it.
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