Love how there's so much going on here, lots of detail and things to spot : )

 How'd Po from Kung Fu Panda sneak his way in? Is this a Where's Waldo kind of thing? :P

The milk bottle reminds me a video clip from Blur.

jejeje, bacano el payaso con el megáfono.

yeah, it has it all. Besides all anatomical nitpicking, one thing you really might want to try is align the feet of your guys towards their front, not their sides (you did it really well on the soldier, but all others look unnecessarily wrong)

Zombie! Naked chicks! Puplic urination.  I dig iso.