He rubbed the head through my folds—slow at first, coating himself, then faster, harder, nudging my entrance without entering. I tried to rock up into him; the restraints held me helpless.

“Beg,” he said.

“Please—Doctor—fuck me—please—”

He leaned over me, one hand braced beside my head, the other guiding his cock. The tip breached me—just the head—stretching my entrance wide. I moaned loud, long. Then he slammed forward.

No slow slide. No gentle inching. One brutal thrust buried him to the hilt. I screamed—shock, stretch, fullness slamming into me like a punch. He bottomed out so hard I felt him against my cervix, balls slapping my ass. The burn was...