Spread like a Champ! (NSFW sketch) (Patreon)

Sketchy HumpDay!

You saw me study anatomy regularly & posting the sketches. Here I did the studies a little while ago & only posted a video test as a Reel on Instagram (still not convinced by this feature, but it's another debate!).

Anyway here I show you HOW I used these back anatomy studies in this sketch illustration where one guy is spreading wide. But what is he spreading exactly? :-P