Gaster AU Oneshots 2

WD Gaster x Scientist! Reader

(The pic above should give you an idea of the story. It has a funny plot twist ending, I promise.)

Gaster walked in to see you walking out of your office. 'Odd.' Gaster thought. 'I clock in before (y/n).' Gaster looked and saw you were still clocked in from yesterday.

Gaster frowned slightly. Ever since monsters lost the war, you been working over night to find a way out. Gaster walked into the break room to see you pouring an energy drink into your coffee. "Hi Dings." You greeted before taking a sip of your coffee.

"(Y/n), are you taking nightshift against Asgore's orders again?" Gaster asked. You shrugged before walking back into your office. Gaster sighed before he suddenly had an idea. Whenever his sons, Sans and Papyrus, wouldn't sleep... he'd tickle them to hysterics. Gaster smirked as he thought of the idea. This just might work.

Gaster snuck into your office to see you finishing your energy drink/coffee. You took in a breath before squeaking at a hand poking where your ribs would be. "G-Gaster! D-Don't do thhahat!" You giggled before seeing Gaster's evil smirk. "Um... G..Gaster..?" You giggled nervously before Gaster attacked your sides while growling playfully.

"NOHOHOO! G-G-GAHAHASTER!" You squealed as one of Gaster's magic hands held your mug, so it wouldn't break. "Why did I stop doing this? I forgot how cute your laugh is!" Gaster said as you both sank to the floor.

You tried to grab Gaster's wrist until he summoned a second magic hand. It started to scratch your exposed pit before you giggled and turned to your side. "GAHAHAHAD DAHAHAHAMN IHIHIHIHIT!" You started to kick your legs as Gaster kept scribbling his hands over your sides and growling.

"Grrrr! The tickle monster is back from the past!" Gaster teased as your face started to light up. "STHAHAHAHAOP IT! PLEHEHEHASE!" You begged as Gaster chuckled. "Do you promise to stop working all hours of the day?" Gaster asked. "YES! YES YES! NOW STAHAHAHAOP! GAHAHAHASTER!" You quickly agreed before Gaster stopped and snapped his fingers.

Gaster held his hand out before your mug landed perfectly on it. Gaster stood up and placed your mug on the desk. You stood up before stumbling. "I hope you learned your lesson (y/n)!" Gaster said as you growled. "F**k you..." You muttered under your breath.

"What?"

Gaster turned to you as you gulped. The rest of the day was with your laughter as Gaster kept tickling you for cursing or just something stupid that happened years ago. So, basically, you both got nothing done that was SUPPOSE to get done.