Here's a series of stock photos based on DeviantArt drawings that were volunteered up by their creators.
If you don't photoshop a dick in my mouth, then I hate you.
Here's some sideways behind the scenes footage: [link]
If you ever find yourself wanting to draw similar poses, feel free to use these photos to guide your anatomy and gravity in the right direction.
The artists' names are on the drawings, they do not belong to me. Most were volunteered for me to use here. The drawings themselves are not references.
Check this out: