"Now you see him, now you don't!" "Before, and after".

The title is a joke, of course. :)

I could further joke that the guy is an avid researcher, member of several herpetological societies. He wrestles with his python once a month, so that's his Mont(hl)y Python. 

The lower image shows his Full...Python. Full of food.

Joking aside, the upper image shows a young boa, http://commons.wikimedia.org/wiki/File:Snake,_Jersey_Zoo.jpg and the bottom shows an 8 meter-long sucuri from Pantanal, Brazil. That's a special boa, called anaconda - green anaconda, in this case. 

In the belly of the beast is a capybara, the world's largest rodent http://en.wikipedia.org/wiki/Capybara.

"Eunectes murinus (derived from the Greek "Ευνήκτης" meaning "good swimmer" and the Latin "murinus" translated into "he who predates on mice") is a non-venomous boa species found in South America. It is the most massive of all known snake species".

"Primarily aquatic, they eat a wide variety of prey, almost anything they can manage to overpower, including fish, birds, a variety of mammals, and other reptiles. Particularly large anacondas may even consume large prey such as tapir, deer, capybara, jaguars, black caiman, and crocodiles, but such large meals are not regularly consumed"

http://en.wikipedia.org/wiki/Eunectes_murinus

I especially like that lower image, an actual postcard from Brazil. Someday, I'll create a maximum card, with a matching stamp.

Here are a few anaconda stamps:

http://www.reptile-stamps.de/html/eunectes