MINI ME!

Replicated the problem, it only happens during certain render states regarding equipment... or something... anyways, I'll fix it.

EDIT: Ok, it just disappeared and I have no idea what's going on.

EDIT2: Whatever, I probably fixed it, no idea :P.

lol ok, and actually the skulls do have a bottom texture!

None of the vanilla skulls have bottom either, and as for the head stuck on your penis, you may have some weird equipment on :P I'll have to see if I can replicate that, somehow.

I was about to post this earlier so here it is:

and that is a solid texture, no holes. Sadly I have no idea what could be the conflicting mod as no other mods have wearable heads in my personal pack.

I will try without the extra mods and see what I can find

yeah idk anymore, however if you want here is the mod list in its entirety that I know has the issue

They have a hole on the bottom, there is a different texture but it's not a priority to change the Enderman heads. I can't replicate the bottom head, you have a conflicting mod.

Yea, that's not how skulls/heads look in vanilla.

that is a vanilla head dude XD

here is all the proof you will ever need :P

Even though that is 1.8.7 as far as textures go everything is the same just the heads are 3d in inventories

http://i.imgur.com/8mMnifV.png

@chylex true, true.... but endermen are not skellies are they? Well atleast if they were then that would be strange. :P

well anyway do you have a good idea of what mod(s) could be causing the mutant head to grow? XD

Well, I used the skeleton heads as a code base for mine :P no idea about your extra head, possibly anything that has special armor rendering.

hmm maybe TiC I guess? I will try without that and see.

Any updates? I'm watching you.

@chylex lol nice one! If endermen are that big I am out of here!! :P