Sandvitches so tasty!!
Well I'm glad you put this up here and I found it to be quite humorous and well made for something put together in such a short amount of time. If you could fix anything I would simply say fix up the audio so that it sounds a bit less chopped, it would likely take more time but the end result of the audio would be a lot cleaner.
The animation here was actually pretty cool and I liked the look on engineer's face the whole time as well. Scout at the end seemed a bit unhappy for one reason or another, maybe it was because he told engineer how to make a sandwich or that he had done it in song as Pinkie Pie had done in the cupcakes song from the show.
I noticed very little to no mistakes in animation which was good here so I guess you watched it as you progressively made it to make sure there was no real odd mistakes that may have slipped into the animation. I also like the icon since most people watching would probably be happy to see Heavy Weapon's Guy singing and being more than jolly enough to help a friend make some food.
The audio was good since I could hear the cupcake song in the back. While up front Heavy Weapon's guy was offering a lot of helpful advice on how to make the sandwich as well. Hilarious how he tells him a lot of stuff and the end result is there is some different stuff in the sandwich rather than a mess like there should be, hilarious to me anyways.
I also enjoyed the cross over reference of My Little Pony, good show and such I think. Only thing you probably could have done though to make this even more funny is having a My Little Pony character in there somewhere or having pyro appear to cook up the stuff for him with his flamethrower which also could have been funny to watch.
Overall, well done animation, splicing, and referencing. I can see that mixing the two together seems to go quite well. Should do another one in the future too. Would not mind seeing the Spy sing to the Cutie Mark Crusader song or Giggle at the Ghostly song either. Very well done animation, I enjoyed every moment of it as well. Would love to see a few more like this in the future too, well done!! <3 <3