I received and email from The Counter [thecounterburger.com]
restaurants offering the following deal on Father's Day:
Free Burger for Dad with Purchase of One [cloudfront.net]
Sunday, June 17, 2018
No coupon required. Just say "BFD"
- Burger for Dad. Good for 1/3 lb burger.
The offer is also mentioned on their FB page [facebook.com]
The Counter specializes in custom gourmet burgers where you pick the toppings.
Not valid at airport locations.
Most restaurants are located in CA, but there are some in other states. Restaurant Locator [thecounter.com]