"Yes you've got it! Just get a good rhythm going!!! Feel the base against your clit!!! Remember you're doing this for your pleasure not his!"
"What if he cums before I do?"
"His orgasms don't mean anything!!! You just fuck him until you cum and then you make him lick up his mess!!!"
"Thanks so much Sis, and thanks for letting me practice on your Sissy husband!!!"
"That's what sister's are for!"