Fall down on her with Bubble Butt

"You promise you'll catch me, right?" Buster Girl called down, cupping one large hand to the side of her mouth to project her volume. The giggle hiding in her voice made it clear she had something dirty planned.

Heat Girl smiled up, though one eyebrow twitched; she hated to imagine what the pervy robot had planned. "Yes, of course! I never tell lies, Buster Girl!" she called back, then made a "come on" gesture by curling her fingers inward.

Hiding her smile with one hand, Buster Girl activated her devious weapon: Bubble Butt! Her armor swapped from blue to gray and her buttocks enlarged past their already sizable shape and weight. Now prepared, she held her arms out to either side, then jumped into the air, plummeting through the room's center hole with her butt facing down, performing a flawless butt stomp towards the enemy below!

The Robot Mistress barely had time to get out the word "That's-!" before the heroine's bottom dropped like a ton of lead, smacking her in the face and knocking her off her feet. The day-care teacher's body crashed to the ground with the arms upward, fingers twitching in the air, while Buster Girl sat upon her face.

The cheeky protector of mankind added insult to considerable injury by wiggling her butt back and forth. "He he! I guess that's one way to catch me!" she giggled. When Heat Girl's muffled voice came from beneath her, Buster Girl couldn't help taunting her further. "Did you just say I have a big butt? You're one to talk!" As Heat Girl desperately slapped one hot hand up and down upon her bottom, she finally lifted herself off, returning to the ordinary color and seeing a sizzling hand-print left on one cheek. "Oof! I'm glad I was still bubbled up for that one. Do you spank your kids with that hand?"

"I don't spank children! Only very, very naughty adult robot girls who ought to know better than to be so rude!!" Heat Girl shouted, stumbling back up to her feet and replacing her misplaced sun-hat upon her tussled hair. Her face was still red from a mixture of personal embarrassment, frustration, and the massive weight of Buster Girl's butt smashing into her face. "Dirty, dirty! Naughty Buster Girl! Don't use lewd weapons like that one! The other Robot Mistresses have been a bad influence on you, I can tell!" she complained, waving her fists in the air.

"He he! You're cute when you're angry. I can't help but keep teasing you!" Buster Girl chuckled. "I wonder if your kids are the same way?"

"Oooo! My kids are innocent little angels, not like you, Buster Girl! I'm going to have to give you a strict punishment! Once I... recover myself a little," she groaned, stepping back and forth on her feet uneasily as her head spun from the **** of the Bubble But attack.

((Used 10 Bubble Butt energy))

((Heat Girl took 20 damage!))