Burger King is going Irish this weekend, celebrating St. Patrick's Day by giving away free french fries to customers all weekend long.

On Saturday and Sunday, you can score one value-size fries per customer at participating Burger King restaurants.

The offer says "while supplies last" but it's hard to imagine a fast-food restaurant running out of fries.

The fries will be served with "St. Paddy's Sauce" made by Heinz.

No purchase is required.

The daily deal site Living Social is serving up McDonald's Big Macs and french fries at 50 percent off.

For $13, you get vouchers for five Big Macs and five large servings of french fries.

The vouchers, worth $26, can be used individually at any McDonald's in the United States.

Click here for the deal.