I would love to rp a scenario where my character's partner/gf has to transform for some reason into an older, heavier woman resembling the Mrs. McCarthy character from the "Fr Brown" TV show:
https://78.media.tumblr.com/b33f29eaac2 ... 3_1280.jpg
https://78.media.tumblr.com/c8f48afdf9a ... 6_1280.jpg
It would be by classic polyjuice method and it would be by way of disguise. One possible scenario would be that the couple are friendly with a neighbouring widow who's away frequently; she has entrusted them with a key to her home. While she's away for a week or two, they have - for some reason - to get some of her clothes, along with a hair for the potion, and transform the gf into the widow as a disguise.
I know it's very unusual, even for a kink, but there's no harm in asking! Also, I just want to wish everyone here, particularly those I have had the pleasure of meeting, a happy, healthy, prosperous and rewarding New Year.