You'd be hungry too if all you ever ate was water and sunlight.
Source: http://26.media.tumblr.com/tumblr_m26d0km2ln1qczsapo1_r2_1280.jpg
Source: farm1.staticflickr.com
Source: http://26.media.tumblr.com/tumblr_lsrd2sSCir1qczsapo1_1280.jpg
Source: http://26.media.tumblr.com/tumblr_lodx7pLbUS1qczsapo1_1280.jpg