(EPA/Alex Wong)

This photo captures a classic Biden face. VPOTUS seemed to be quite amused with himself while lunching with President Obama and local workers, including Meredith Upchurch, at Shake Shack in Dupont Circle on Friday. We just wish we’d been there to hear what he was saying. Since we weren’t, we want you to tell us.

Send us your best caption, and we’ll post our favorites on the blog Monday. Tweet @reliablesource, leave it in the comments section, write it on our Facebook wall, or e-mail us: reliablesource@washpost.com.

RELATED: Burger Buddies: Obama and Biden dine at D.C. Shack Shake

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