This was a combo of Poll and Prompt Generator story: I rolled 30 Minutes, My Little Pony, Gender Flip (Rule 63), and it came joint sixth in this poll on the 30th. Screenshot Of Poll 29/9.  As it shared sixth place with two other works, it was uploaded simultaneous to them.

Tried to be a little different from a regular MLP genderflip, only swapped out half the main cast, reassigned Rainbow Dash to be slightly older and also now the mother of twins, who should be obvious. Anyone else unmentioned, I ran out of time :P

Comes across more like an excerpt from a bigger story TBH, but oh well, thar's the risk of a time limit challenge even with half an hour =P