Millie is annoyed

Having finished cuming, I just leave my cock pushed all the way into Millie's pussy, enjoying the feel of the tightness and wetness of it, and it is still slowly squeezing my cock, I guess with the aftertremors from Millie's orgasm.

Millie just lays there, bent over the kitchen table, her breathing still heavy but slowly subsiding back to normal. We stay like this for a while, then Millie says:

"Matt, take it out."

I take a step back, and my cock comes out of her pussy. Millie slowly straightens her back, then turns around, just looks at me, then slaps me across the face. It is not a full **** slap, but it still stings quite a lot, and I can feel my cheek growing red.

Millie keeps starring at me for a few seconds, then shakes her head and says:

"What the fuck did you just do?"