Author: Sorceress
"What is it," I mused, "about the act of cumming, that so commonly seals a gender transformation spell?"
"Dunno, babe," grunted my partner from behind me, before slamming his cock into my tight pussy once more.
"Mmh! It just seems a bit arbitrary, is all. Not very useful. Seems to me -ah fuck yes, that's the spot- that if you went to all the trouble to develop a spell that will change your gender, why invoke permanency for having sex, soemthing that almost everyone using the spell will want to try?"
"Maybe it has something to with the magic of the body," said my partner. "That in accepting the seed of a man -oh you like that, don't you baby?- one has given up all pretensions to manhood, and instead fully entered and embraced womanhood. Oh, you're such a good little slut."
"Ooh, fuck me harder, you stallion! Maybe. Seems a bit old-fashioned, though. Ah! Ah! Ah! Or maybe the spell's inventor was too clever for his own -Fuck!- good, and thought -Oh!- that it would be poetic if that final thrust locked the change for -Ah God!- good."
"Could be."
"Well at any rate -Ah!- this is all hypothetical, since you're -Jesus ooooh!- going to pull out before you cum, right?"
There was silence.
"Right?!"
"So sorry, babe," he gasped, and with that, he rammed home that final thrust.
"You bastard! Ahhhrrrrhhhhh!" I screamed as I tumbled over the edge, the impossible ecstasy of the female orgasm mixing with the pain of the thrust, the rush of warm seed deep inside me, and the tingle of magic as the temporary spell became all too permanent.
Fucking magic.
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Original author: Sorceress Sent to my by Cbrorigins.
Repost of a caption already on this site to add the missing image.