Cream filling

>Day cream filling in Equestria
>When Celestia propositioned you earlier, you thought she was joking
>After all, the last time you'd done it had to have been years ago
>You weren't quite sure you even remembered how to do it, it had been so long
>So, in your disbelief, you gave her a hearty belly laugh, wiping a tear from your eye
>For her part, she stamped her hoof, blushing furiously
>"I'm serious, Anon!"
>And so she was.
>So the two of you headed off to the kitchens of Canterlot Palace
>The two of you have been there for the past hour, banging away
>Apparently, just like riding a bike, it all came back to you
>In no time at all, you were doing it like a natural
>Of course, Celestia had her own ideas...
>"Ah! Anon! You can't! N-Not inside!"
"Shut up and let me add the creamy filling, Celestia."
>"B-but it's so dirty!"
"At no point did it ever touch the floor. It is perfectly CLEAN."
>Celestia pouts at you
"Don't give me that look. It's just custard for fuck's sake!"
>"It tastes icky, Anon! ...And it reminds me of-"
>You interrupt her, trying to ignore the blush on her face
"Woman, you are not going to ruin doughnuts for me."
>You sigh
"Fine, the big baby gets her way, I'll leave some of them plain."
>In an instant, her demeanor completely changes, a smirk finding its way to her face
>"I was confident you'd see it my way, Anon. Now, if you'll excuse me, I've got a budget planning meeting to addend to. I believe you are more than capable of finishing up in here all by yourself. Goodbye!"
>You wait until she leaves the room
>...And you fill every last doughnut with custard, anyway
>She'll learn to like custard, eventually
>She'll have to, with you being new head baker