YGO smut

I almost was going to write crack darkfic, had an idea and everything. Then I realized I didn't want to write YGO darkfic. And I have been wanting to write this, er, pairing. So here's fluffy crack, or possibly cracked fluff, of the pr0nish variety.

Y/S-M/Y, or some variation thereof (what would you call that, sandwichshipping?) In character? What is this in character of which you speak?
Warnings for consensual sexing stuffs, yaoi, voyeurism, advancing the timeline, willfully ignoring canon, crack, etc. Also please to be remembering that X-parrot is a gen writer for a reason, and has no business writing smut.

In which Seto is up for a new challenge...