Keep stroking, I've got more to tell you.
I have a dildo with a base on it. I sometimes put it at the edge of the bed and sit on it as I watch you. I rock up and down on it picturing myself sitting on your lap grinding my ass into your stomach.
I grab my tits pretending you are reaching around and hanging onto them.
Make a fist with one hand. Push you cock into the base like you are fucking my pussy. Take your other hand and hold it against your stomach right at the base of your cock. Every time your fist gets to the base of your cock push your other hand into your stomach. Picture my ass pushing into you while I sit on top of you.
Close your eyes and do this 50 more times.