Your girlfriend seemed to have had a breakthrough. She smiled, then quickly ran into the bathroom. She had left the door open, but you didn't want to peek as this had obviously been meant as a surprise. You heard a giggle come from the bathroom along with various noises that you didn't expect. After seeing silky blonde hair with some pink highlights spill out of the bathroom, you began to get suspicious. After another minute or two, you watched as the most ridiculous looking blonde bimbo you'd ever seen walked into the bedroom. Perfectly round and perky breasts that were as large as beach balls, an ass nearly double that size combined with thighs and hips you could hardly imagine even existing. Looking at her face, you could recognise it was your girlfriend, but just barely. Long silky platinum blonde hair framed her tanned face, large and glazed-over bright blue eyes stared straight at you, a tiny button nose in the center of hr face, pink lips so large they went past her chin, dripping with drool, and fifty layers of makeup over it all. You watched as the bi- your girlfriend walked over to you. Her hips swaying sensually while still managing to walk in eight inch heels indicated to you that she'd been practicing this for a while. She sat down on the bed next to you, her two inch almond shaped fingernails hypnotically clacking on the bedside table. This is where the sexy bimbo act ended. She tried to speak in her new high pitched yet seductive tone, but all that came on was blubber and drool, due to her huge lips. You laughed, and she got flustered. A pink blush covering her entire face. You then saw her start to rub her pussy and she managed to get a few words out.
"Wike, awe we having swex ow not."
You doubled over, nearly crying. Your girlfriend getting even more embarrassed, and even hornier. Somehow.
"Alright, alright."
You unzip your pants. Fully erect, you insert yourself into your girlfriend. This is the best sex you've ever had. While you were enjoying this, it seemed your girlfriend was enjoying this so much more. Her gained an "ahegao" expression and moaned so loud the people three rooms down could probably hear. As you continued having the time of your life, something bad was happening.