Okay, now I know Doug (aka. !Duperghoul (https://www.deviantart.com/duperghoul) has the fan-service ending to his Battle between Sonic.exe & Pinkamena.
For those who don't follow him, here's a basic summary of that ending:
The two fight with Doug & Matt commentating like normal (well, as normal as a cannibalistic pony and a demonic hedgehog fighting whilst two teenage boys comment on the battle gets). Sonic.exe pummels Pinkamena's face in until she suddenly bites his arm. The two then stop fighting and speak for a moment.
After that, things get a bit sexual between them, starting with Sonic.exe saying that he'll "fist [her] so hard, that [he'll] pull out [her] ovar