Human butts are pillows.

They're both sleepy from a day of intense X-boxing.
(via imgur)

In order to achieve ergonomic nap perfection, one must nestle oneself atop a human butt and upper thigh area. Redditor Milky_moo_cow came home and found their boyfriend and dog fast asleep in this adorable position. We should all strive to one day reach the peak of Nap Mountain as efficiently as these two sleepy dudes.

Sources: imgur