It is not exactly a request but I woud like to suggest to make something more complex that just girls farting and pooping.

Maybe something like one girl eating it from another girl ass with a spoon.
maybe something like picture of the girl with her ass pointing up with ass and pussy widely open filled with appropriate content and for the bonus cocktail straw stuffed into pee hole

Or you could draw human centipede version.

Or 2 girls connected with tube.