A new Dunkin' Donuts ad has people on social media in a furor over "genetics" for the second time this week. The breakfast food franchise released a short spot for its new summer Refresher drinks on Tuesday featuring "The Summer I Turned Pretty" star Gavin Casalegno. During the 35-second ad, the actor credited his summer tan to his "genetics." "Why are ads so obsessed with genetics all of a sudden," one user commented on the ad on TikTok, getting nearly 28,000 likes for the post. In the ad, Casalegno sat near a swimming pool holding his Dunkin' Golden Hour Refresher...