Brain freeze alert!
Get a free sample of Dunkin' Donuts new frozen lemonade to celebrate the first day of summer on Thursday, June 21.
Stop in and cool off from 10 a.m. to 2 p.m. at participating stores with a 3.5-ounce sample of the new frosty beverage in original or strawberry flavors while supplies last, according to a news release.
No purchase is necessary.
The chain also is debuting new layered Cosmic Coolatta drinks with split personalities. Cosmic Cotton Candy or Pineapple Coolattas are topped with a layer of Blue Raspberry.