He's looking down in the last photo like he just noticed he grew a new limb.
(via @Gawker)

Today, important Internet blog Gawker posted some images from the set of Idris Elba's new film Hundred Streets, and (as part of their enjoyable ongoing series, "Is This A Dick, Or What?") asked "Is This Idris Elba's Dick, Or What?" It was arguably the most important potential celebrity dong since Jon Hamm set the world on fire two summers ago with his shorts-busting bulge.

Sources: Gawker