Spank her butt red.

With a loud clap, the paddle hits her ass. At first, Jane yelps in pain, but soon she moans in pure relief. You hit her again, harder this time. Once again, she yelps but soon moans again in pure pleasure. The gag silences her enough that the neighbors won't be bothered, but not so much that you can't enjoy the noises she makes. You continue to hit her, each blow coming harder and faster than the last. Then, at the sixteenth slap, Jane stops moaning and only bites down hard on the improvised ball gag; the pain having increased too quickly for her. Also, her butt is already turning bright pink.

"Hey, can you take it or do you need a break?" you ask while tugging the gag out of her mouth and it slips from your hand, hits the floor and rolls away.

"It is ok," she squeezes out, trying hard to avoid whining, "I can take it. I am your good **** and will endure every punishment you give me for my naughty behavior."

"Very well," you say, honestly unsure. "Then... I will continue until we reach 50 spanks." Her eyes widen for a second when you say that, and she cries out for a moment when the paddle hits her ass; but then she catches herself and from then on only whimpers.

A few minutes later, her ass cheeks have turned the color of fresh apples; and, If your count is correct, she has now taken 38 Spanks. Jane is sobbing as quietly as she can and has tears streaming down her face. Gently, you caress her red butt making her whine in pain, and you decide she has had enough. "Now, what do you have to say?" you ask, giving the reddest patch of her right ass cheek a gentle but firm pinch.

"I am sorry, Master." Jane howls in pain. "I will never lie to you, I swear it. Please forgive me."

"You swore that you had learned your lesson YESTERDAY," you reply. "Tell me, why should I believe you this time?"

"Please, Master!" Jane begs, "It hurts! Forgive me for my wrongdoings. I know, I have to follow your orders without lying or laziness. I will never again think I could be a worthy partner for you. Please, let me continue my life as your ****. It is the place I belong."

"Well, your ass seems red enough for me," you say while pinching Jane's left ass cheek. Her butt is hot to the touch and is now dark red. She jerks in pain but remains silent.

"You know what?" you ask, giving her ass one last smack with your palm. "Y'know, your butt looks so much like a red apple, it's actually making me hungry. Why don't you make yourself useful and cook some breakfast? Oh, and stay undressed. I really like the look of your freshly spanked ass."

Jane giggles a bit and rubs her butt against your hand. In response, you slap it again to get her moving. Jane doesn't make a sound at the impact as she stands up, and even smiles seductively to you over her shoulder as she walks to the kitchen and starts to cook.