Ask or dare the AU Sans'!

Ask #7

@XionShadow
"Well, it's not really personal...and I'll also mess around with UF Sans. He can't swear ya know, which makes it better" Gaster Sans said, touching the crack in his skull. "Well, it started a couple years ago..." He began.
20 years back
Gaster Sans was in a locked room. He sat on a gray bed and sighed. He heard a zap and saw the electric gate open up. He didn't want to get up and go back but the curiosity got the best of him. He walked out of the room and down a hallway. Gaster Sans hear other footsteps and started to get scared. He backed up to only bump into his 'father', Gaster. He created Gaster Sans and Gaster Sans hated it. He turned around but his lazy feet turned to quick and he fell. "What do you want old man?!" Gaster Sans tried to stand up to his pa for the fifth time but like each time, Gaster laughed mockingly at him and kicked the side of his rib. "That's not how you treat your dad" Gaster said, suddenly stopped laughing. "If you were anything CLOSE to a dad, Papyrus would still be ALIVE!" He snapped, pointing at the pile of dust  that was STILL on Gaster's lab coat for the past five years. Gaster growled at his 'son' "HOW DARE YOU SNAP AT ME!!" He screamed. Gaster Sans shrunk at the immediate loud tone in Gaster's voice. Gaster's eye glowed a bright orange and picked up Gaster Sans (not by the magic btw) by collar of his white shirt. Gaster Sans felt scared and afraid by his own 'father'. Gaster used some magic to tighten Gaster Sans' skull. "STOP! PLEASE IT, hurts..." Gaster Sans pleaded. He got dropped on the floor with a slam. He backed up but to no use. He watched as Gaster summoned a potion. "Drink it" Gaster demanded. He reluctantly drunk the potion which numbed his body except his head, also making everything feel to heavy to move. Gaster chuckled and summoned a chisel. "I am your father, I need you to look like me to remember who you REALLY belong to" Gaster said. He started chiseling away at the top and bottom of his eye sockets.
Present day
"So ya...there's your story" he said, touching the cracks. You hugged him and got a hug back. He smirked and got up. "UNDERFELL! GET UP HERE!!" He yelled. You looked at the door and watched it slam open. "What. Do. You. Want." He grudged. "Umm...I have a game we can play, swear if you don't want to" Gaster Sans said. You watched UF Sans growl at him. "Ok! If you don't want me and Xion to go in your room, swear now" he smirked. You laughed as you saw UF Sans run out of Gaster Sans' room. "Come on kid, lets go see his room. Just," he said, stopping and bending down to your hight. "Can you keep this between us?" He asked. You smiled warmly and gave him a thumbs up. "Nice, now...lets go bug Mr. Edgy Mc My Chemical Romance!" He said, giving you a high five.