Swapcest - Heat (NSFW)

The Bonezone

Pappy's POV

Fuck yes. Sans was going to let me inside of him. My lord the fun we were gonna have.

"I just gotta warn ya, it might hurt-" I said, the grin still on my face.

"I don't care!~ I w-want it!~" He begged. Holy shit. Again, so fucking hot.

I unzipped the fly on my pants and my erection bounced up playfully. I aligned my dick so that it would slide in, hopefully with no problem. I thrust into my cute little (but older) brother, but not all the way. He was so warm and..... So fucking tight. 

"Gah, P-Pappy!" He whined.

"Are you ok? Should I stop?" I panicked, not wanting to hurt him.

"It hurt a little, but you can keep going." He ordered.

I did as I was told and thrust in, all the way this time. I couldn't help but let out a small grunt of pleasure... Sans, on the other hand, was biting into a pillow. 

"What, am I that big?" I asked... It was rhetorical of course. I knew I was that big, after all, skeletons can summon any genitalia, of any size or shape, regardless of gender. I was honestly just fishing for compliments.

"Pap! N-now is not the time for stroking your ego! Just... Hurry up and h-help me..."

"Ok, as you wish. Fast and lustful or slow and passionate?" I asked, already knowing he'd pick the latter. 

"G-go slow...I don't want it to hurt too much..." He mumbled.

As soon as he finished his last word, I began to pull out. I was tempted back inside... Ahh, I... I just wanted to fuck him senseless. There were no other words for it. We were both moaning, Sans was louder than me, though. I loved how loud and... Semi-innocent he was. He was trying to be quiet, but failing miserably.

"P- Pap- Papyrus- ah! I- Love you, b-brother! I feel-- ah! All w-weird... But I like i-it, Keep gooinggg!!!!"