The restaurant Z-Burger in Washington, DC is offering gift certificates for 48 burgers and 48 milkshakes throughout the next year to its first 48 customers that come to one of its locations in the capital on Tuesday, August 4, in commemoration of President Barack Obama's birthday.

Z-Burger will also give burgers for free and birthday cake from 11:00 a.m. to 2:00 p.m. Tuesday.

Z-Burger's restaurants are located at 4321 Wisconsin Ave, Washington, DC and 2414 Wisconsin Ave, NW Washington DC 20007.