An excellent question comrade Bones.
In my evolution into a Giant Hamburger I had to periodically leave my sesame-seeded shelter and seek a newer, larger bun. This is a time of extreme vulnerability for me. Forunately, I am as large as my fragile ecosystem will support. Perhaps if I move to a bigger city there will be room for more growth.
Now let's get back to heads.
not those heads...
sigh
er... human heads
Argh, close enough.
-GH