Stop her.

You push her hands away to stop her. She persists but after a minute she stops with a huff. "Fine, if you're not gonna let me go down on you, you are gonna go down on me." Ms.Robinson is clearly upset and looking to punish you. Maybe if you lick her pussy good enough it will prevent punishment. You start kissng her neck, slowly working your way down. You stop momentarily to play with her titties. You crawl down her stomach and something seems off, so you decide to go down her legs and slowly work your way up. Once you get to her knees you pull off her panties and reveal an 8" uncut penis. You hesitate. HOW DID THAT FIT IN THERE? And I mean sure you had practiced sucking your dildo at home but this one was much bigger. She notices your hesitation and says "What are you waiting for?"