Now I hope that was good and he used his tongue well for you.
Now we can have a little bit of fun with him. Leave your pussy above his face but tell him not to reach for it. Lean forward and grab his balls in one hand. This is where the fun bit comes in.
Look at his dick. Do you enjoy it? Do you ever wish it was that bit bigger?
If he always satisfies you with it, I want you to lean forward a lick his dick and balls, gently and just tease him for 5 minutes.
Or do you wish it was bigger?
If you wish it was just that tiny bit bigger then slap his balls 3 times, reasonably hard, and then tease him as above for 5 minutes.
Or does it not fill you up at all and you wish it was a lot bigger?
If so, move down and sit down on his chest with all your weight. Now spread his legs and smack his balls really hard. 30 slaps, at least. With each one harder than before. Really hurt them, see if you can make a tear come out of his eye. But keep your weight on his chest so he can not get away.