Or not fly... at least not at first.
With a little practice, aiming and shooting the marshmallow long distances comes easily. Bubby and I were eventually skilled enough at it to compete with one another to see who could shoot the marshmallow all the way across the yard and over the fence (into the wash, not the neighbor's yard).
We tried shooting Cheerios and tiny craft pom-poms, too. We did the pom-poms indoors so as to not litter. The pom-poms didn't work so well. The Cheerios, though, were a smashing success — especially when we tried them indoors and they burst into pieces upon hitting the vaulted ceiling. (Don't tell Megan.)
Roxy, the family dog, had a great time gobbling up all the marshmallows and Cheerios, both inside and out. And call me a bad grandma if you must, but Mac nabbed a fair share of the misfires, as well, picking them up and popping them into his mouth as quickly as we could fire them off. Hey, it kept him busy while his big brother — and his grandma — got the hang of shooting the marshmallows and more over the fence and out of the park.