If you meant it as a joke, use /s. If not, than imagine a terrible knockoff version of both that removes the good qualities of each movie.
Imagine a combination of both, but take away the likable, original characters, original idea (at the time), clever story that isn't just trying to reference a bunch of terrible things on your phone, and the fact that it wasn't designed for people who like to use the face completely wrong/clash of clans-playing, emoji-mongering, self-absorbed tweenage morons. Also, make it a total cash grab. And have characters who are even more slot-like and basic than in inside out, because now they represent a very specific emotion that is only applicable in certain scenarios, rather than a broad range of dergrees within an emotion. I'm sure you'll love it.