Quote Originally Posted by SirsCatsneaky View Post
You really need to tell him, but, you can always in the moment yell "hit me harder Master!"

No. Not "in the moment." That's topping from the bottom.

But you can count outloud and politely thank him and politely ask for another... and he'll either get there through quantity or get there through quality as he realizes you're wearing him out.

Before a scene starts, I suggest you go to him, abase yourself (on your knees, body postrated on the floor, perhaps a whip or flogger or cane in your hand (if that's what you mean by rougher... but regardless,) and beg your master to grant you the favor of being harsher and rougher with you.

But no matter how you do it, open communication is key. You can't hint, you have to be direct.