The big news out of Washington on Friday? President Obama and Joe Biden went to Shake Shack to talk infrastructure. (Yes, infrastructure.)

Cameras followed the dynamic duo to Dupont Circle -- and caught this terrific shot of Biden talking, Obama "listening", an innocent bystander and whole lot of shakes. (Biden had a milkshake -- of course he did! -- while President Obama passed.)

Got a good caption for this photo? Offer it in the comments section. We'll pick a winner on Monday.