Do wilford wolf naked and doing a doggystyle on minerva mink naked and with huge breasts and a witches hat on her head.

Well, I don't have a suggestion as I'm a pretty unimaginative person. But I have to ask: when did you realize you had a thing for explosions?

Really, it's been something I carried throughout my life.

Since I was little, I was fascinated by the cartoons that would have people walking out of explosions. I can't remember too many, but Roadrunner was a favorite in that regard. From there, it just continued as I would hold the bob-ombs in Super Mario 64 or do similar things in other games.

A fireworks safety video from some class in middle school (with graphic pictures) scared me out of it a bit. However, as I discovered pornography, there would be some videos or comics where they would yell something akin to I'm gonna explode! before the climax. I've found my happy medium between the two with cartoon physics, but no one drew it. Eventually, I decided to.

scantily clad, undead, trailer trash fluttershy hobbling out of a boat launch at the witching hour

+huge boobs

Hmm, maybe have someone with big boobs trick or treating, but instead of candy they get a lit stick of dynamite?

Can there be two ponies or does it have to be just one Character?

There can be as many as your idea needs.

Awesome! How about nightmare moon and celestia(the ponies with the biggest Breast in my opinion :P ) dress up as a hot vampire (Nightmare) and Kinky mummy (Celestia). their bodies are faced each other with their big boobs squished together in a sexy pose and they are looking at the audience ( as if we are in the perspective of the person opening the door). Nightmare is Smiling saying "trick" while holding a couple of sticks of dynamite in her hand and celestia is smiling and saying "or treat" while holding a candy basket that is filled with candy in her hand.