Rare Achievement Or Banal Ability?

[Krpt]

I have not seen anything quite like this. Does this require a kind of flexibility or stretchability or what?

Tumblr: Image

Nevertheless, very novel (to me) and very sexy! It seems like the top is worshipping the other guy in as many ways at once as he can. also the bottom's wearing socks!

Are there any more (well known or otherwise) examples of this?

 

[iamsam4x]

On my bucket list!

 

[Krpt]

 

[Tazman66]

That's hot!