The twins Cloudchaser and Flitter love foalsitting Rumble together. After all, two mares are better than one. But one day, Flitter comes down with the horsey hives and has to spend the day at Ponyville Hospital. Therefore, Cloudchaser decides to find somepony else to foalsit with her. Derpy turns out to be the only pegasus mare available for the job. How many things could go wrong? A lot, as it turns out.
May I ask where you got that idea? Derpy being a foalsitter, give she's the mother of Dinky, I find she would have little trouble with the job. Plus, as you shown here, she's a unique experience
9379786
Its all because the two of them standing together
9379792
Uh-huh.
9379795
Eyup
9379786
I wanted to write a story with these characters and I just thought this idea was really funny.
9379836
It is funny, but where did you get that idea? Just popped in?
9379837
It just popped into my head, I guess.
9379840
Still, a very interesting idea you had there
Excellent fanfic
9381317
Thanks, glad you liked it!