This is Forced Perspective. The guy with the bike and the girl looks like their sitting and the other guy looks like he is hanging but really they are laying down on the ground. Its is from the angle and the way you look at it is called forced perspective
Photo courtesy of Nicolino Sapio Forced perspective is a photography technique that utilizes optical illusions to make things appear in ways they aren't supposed to. Chalk and a baloon is all that was used for this forced perspective photograph.