Erica Getting Tested

"Wow, Erica, you did it again, you sneaky gal!" you told her standing besides her, with a grin in your face, rubbing your hand up and down on the front of Erica's slightly inflated cleavage...
"Haha, can't help it! It's soooo much fun seeing their faces everywhere, and all the priviledges i'm having... You know people are really dum, aren't they!" Erica replied as the both of you burst in laughter in the living room after she returned from the day's work...
"Ever since i discovered that inflatable ability of mine,I'm having really fun times you know!" Erica continued... " Just a good pumping every morning and people really buy it! They think i'm big and curvy, those dumb asses! Let alone the fact that my walking and working tasks have become way more lighter when i'm expanded... haha!" 
Erica continued, really enjoying the fact that her boobs were inflated to the size of a cantaloupes and she kept on fooling everyone in her close enviroment exept for you who knew, and had somewhat different plans. After all, many of your friends have been jealous of her and of all the attention Erica was getting quite some time now, and you  were ready to play a prank on her that she would never forget....
"You know, Erica, i think you should try and get bigger as time progresses, or else they'll get suspicious.... just a little extra pumping from now on, what do you think?" You got closer to Erica with your grin more intense, as you held a thick air hose behind your back...
"Oh dunno, maybe you are right, i'll get even bigger tomorrow, i think i'll just deflate now though, i need to rel-MPMPHMPHHPMPHPMHHHH MPHMPH MPHPHHH!!!!"
Erica tried to speak, but was cut off when you stuffed the thick hose into her mouth with huge force, catching her off-guard as Erica's eyes went wide in surprise....
"No time to waste, Erica! Let's find out how big you can get, right this instant!!!!" 
You yelled to Erica's face as you twisted the tank's knob to full blasting mode, sending her cheeks to inflate outwards, to a size that they never had gotten each time she had tried inflating herself before. Your plan had worked, as your hands kept pressing Erica's boobs, feelling the air pushing from the inside as she was inflating with a powerful rate, shooting outwards to the size of huge beachballs in a matter of seconds. 
Erica's breasts surged outwards, inflating up like fleshy balloons, proceedingly to the size of beanbag chairs, as her striped dress started getting tighter around her inflating orbs and humongous lower curves, giving her a vast cleavage of booby sexiness and filling the entire living room with hissing and rubbery sounds all over. Erica' buttocks and thighs too surged outwards in volume in width, inflating up with the air from the tank to the size of truck tires in seconds as well, and overall obtaining an over inflated hourglass curvy figure, full of air and huge in seconds... 
"There you go, Erica! I knew you could outcome yourself easily, let's see how big you'll get before the tank is empty!" 
You whispered to her ear, between hissing and moaning sounds, as Erica checked in horror the content indication at the tank's meter, still being at 98% full...