i simulated something like this for a photoshoot with my mega a while back, sitting myself in a chair, making it invisible and positioning it so it looked like i was leaning on him.
http://www.flickr.com/photos/99914263@N08/9479978245/
i'd call this a "rest" or "relax" sort of interation with a mega :3 and if included, would make bonding with our mega's and such, alot of fun.