I'm sure you would know about Arin's neck from the multiple times you've seen him at conventions. lol
I'm sure the process of both of them requesting this picture was also interesting as I noticed your post about it on Twitter which I may say was funny. Not to mention they both are pretty energetic and do seem to be quite a handful of craziness.
As for the picture itself, love it! I love the exaggerated caricature nature of their designs. Arin's neck and Jon's head just really seem out there and I love it. I also love their expressions, too. Now if only Jaque was added to the party.