Yes, but not in so many words

Unable to verbally respond, Emily instead replies by whimpering and moving her hips.

“I think that’s a yes.” Her sister said “hey, you’ve been locked up in that bathroom all weekend right?”

“Yes Miss.” you say

“And did anyone let you cum?”

“A couple times Miss.”

“What about Emily?”

“No Miss, I just ate her out.”

“Well normally for a female student that’s ok, but Em here isn’t considered one right now and it’s always permitted to make two boys fuck. So get going.”

You climb onto the bed, nervous but simultaneously too horny and too scared of Emily’s sister to hesitate much. Without any fanfare you insert your cock into her wet and waiting pussy. The feeling is incredible, and Emily clearly feels the same as you hear her moan through the ball gag.

“Don’t you dare stop until you’ve both cum.” Her sister says. Out of the corner of your eye you can see her masturbating with the vibrator that was just inside Emily as she watches you two.