You are a Loyal Knight in service of the crown. Your Queen is largely unloved and untouched by the aging king. She calles you to her chambers one night. You can immagine what for.

As a loyal knight of the realm it is your sacred charge to protect and see to the needs of your King and his Queen. You however are one of the few knights left in the castle to defend it while the king is away, so Her royal highness is in your care. She has summoned you to her chambers this night, you don't know what for. However as you enter, all become clear. You see your queen sprawed out on her royal bed, legs apart, regal dress hiked up. Her royal vagina fully visible before you. You quickly shut the door behind you, but before you can say anything she speaks.

"Come hither sir knight." She says in a sultry voice. "I require your prowess in bed. It has been far too long since the King has satisfied me, thus I command you to service you Queen. Bed me, Lay with me... And for the love of the Gods FUCK me!"

Merra - The desperate Queen