In the Deepcleavage Valley, there was an ancient phallus shaped wizards tower known as "The Tower of Mamms" for this was the home of the well known, evil sorceress Mistress Mamms.
Mistress Mamms was as genius, as genius could be, when it came to book smarts, but she was about as bright as a kobold when it came to common sense. Her cruel and unusual behavior rubbed off onto her from her mentor, and mother, Melissa the Mellonous.
Mistress Mamms was searching the shelves of her library, one day, looking for her herbalism book.
As she searched frantically amongst the shelves her enormous bosom, that was tightly confined in a dark purple gown that looked a little to tight around the her huge tits, bounced and jiggled heavily. Even overly constricted in that super tight gown which showed off an ample amount of cleavage, they moved up and down with every one of her frustrated steps from her incredulously long legs.
Mistress Mamms quit searching for a minute and took a deep breath, closed her eyes, and brought her hands up to her face, moving them upwards through her raven-black hair covered head.
Opening her eyes she saw herself in a large standing mirror. She took in the sight of her impressive figure and started to focus on the full roundness of her breasts. They were magnificent. Being extremely huge (44GG in our worlds measurements) without a hint of sag, they jutted outwards and upwards.
Her deep purple gown opened up wide at the front of her collar and ran down to just below her sternum, leaving a wide open valley of mountainous cleavage. On the right side of her leg, the gown had a slit running all the way up to her hip. She dropped her hands down to her hips and struck a sexy pose.
Inhaling deeply she held her breath and pushed her breasts out from her chest. Her eyes widened as she saw how big she could make them, it was enough to bring a crooked smile from the full, red lips of Mistress Mamms, and a gasp of shock from a shadowy corner of the room.
Whirling towards the sound, the sorceress saw nothing but still asked a, "Who's there?"
At first there was no answer, but within seconds a silhouetted three-foot tall figure with bat-like wings, reptilian eyes, a bald knobby head, razor sharp teeth, abnormally big hands, and a long two-foot tail, materialized while clutching a book to its chest.
"My book, in the hands of an imp!" shouted Mistress Mamms "Give it to me! NOW!" commanded the mistress. The imp glared at the sorceress and then smiled wickedly. A plan was coming to mind. The imp held the book out with a snide grin; the mistress made a grab for it, but as soon as she did the imp and the book disappeared.
A second later the imp reappeared laying across the top of the heavy oaken bookshelf that was behind Mistress Mamms with his long tail hanging limply over the edge of the bookshelf and his head propped up under one of his huge hands as he leaned on his elbow. Except this time he had no book with him.
"All I'll give it to you alright, I'll give it to you real good, magling." Mistress Mamms whirled around again causing her massive mammaries to bounce and shake from side to side. An action that didn't go unnoticed from the ogling little imp. Anger blocked out any perception at the sexual statement that the imp had already made in counter to her demand.
"I warn you demon, you better hand over my book or I will smite you back to the pits of hell where you came from."
The imp rolled his eyes and gave an insolent yawn. "Such tough talk from an amateur. Really do think that I cannot see your power, mortal. It is a natural ability for one of my kind to detect magic and though it surrounds you. It only does lightly. No, if anyone could do anything serious to anybody in this room. I would have to bet on myself."
The imp was right and Mistress Mamms knew it too. She was a powerful mage, but not even close enough to be able to compete with such a powerful creature as an imp. This being was forged in the fires of hell and served lichs and demon lords as personal servants and spies. This one must have done something great indeed to get its freedom to roam the plains alone. Such a thing was very rare, but not unheard off.
"Why then does such a powerful being as yourself" said Mistress Mamms bitterly and sarcastically "need such a simple book such as herb lore then?"
"The book?" questioned the imp with a raised leathery eyebrow "I could care less about such a tome. Such knowledge is beneath me."
"Oh really." interrupted Mistress Mamms "Then perhaps my lord would care to share with a fellow magic user all that he knows?" asked Mistress Mamms.
The imp narrowed his eyes as he stared at her. "You can't be serious." He said plainly.
Mistress Mamms narrowed her eyes back "What is it you want then, fool?" hissed Mistress Mamms through clenched teeth.
"To strike a deal, I'll give you back your book if you let me have my way with you for one day."
With that the imp leaped up from his prone position to both feet and his tail started to erect and change shape. Within seconds it was hard and phallus shaped. It looked just like a human cock that protruded out from his back and curved around between his little legs, sticking out at about two and one-half feet.