Steelers' DeAngelo Williams -- Videobombed By Browns Star ... In Egypt!! (VIDEO)

Egypt was Anubis-pound territory this week ('cause he's part dawg) with Cleveland Browns TE Gary Barnidge owning Steelers RB DeAngelo Williams in front of the pyramids ... and it was all on video!

The guys are both in Egypt as part of the American Football Without Barriers camp -- which exposes football to parts of the world where it isn't exactly super popular ... like Egypt.

And as Williams was trying to proudly show off his Steelers gear for the camera ... Barnidge snuck in from behind with a pretty solid prank.

As we previously reported, 10 NFL stars are currently on the trip ... including Marshawn Lynch who got on a camel to pose with the gang out in Giza (he's one of the guys below).