"A little higher" I heard Emma's moan making me gulp as I looked at my hand a realized how close I was to her ass.
I moved my hands slightly up as I felt the crease where her thighs met her ass and my hands were almost shaking before I heard Emma speak once more with a annoyed voice.
"Didn't I say higher?" Emma complained and I gulped as I looked at her sweaty ass cheeks before slowly moving my hands up.
'S~Soft' I felt my hands slid over the dough like cheeks as my hands sunk into the pliable flesh.
"Hmmm that's good" Emma hummed as I expanded my finger's and slowly took a big grip of each cheek.
'It's like my finger's are sinking into the flesh' My sister's ass cheeks bulged between my finger's and I couldn't resist as I started to message and knead the flesh like dough.
"Mnhhh" Emma moaned as I groped and gripped her doughy sweaty ass making sure to get every inch of the pliable skin.
My finger's dug away as I gripped her meaty cheeks and I was so engrossed that I didn't even realize that I had pulled apart her cheeks exposing the inside making me gulp as my hands shook.
'H~her~" Emma's bikini was basically a string thong and besides her pussy nothing else was covered.
The string dug between her sweaty ass cheeks and ran over a tiny rosebud that was only half covered. I couldn't believe I was staring at Emma's asshole and had to resist the urge to bury my face between my sister's sweaty ass cheeks.
'C~calm down!' I pulled my hands away as Emma's cheeks jiggled and returned to their place.
"I~im done" I said with a shaky voice.
"Thank You little bro" Emma muttered as she laid under the sun with her body glistening from sweat.
I calmed myself down as I moved to my own towel and took deep breaths. I was shocked that I had groped my sister but I couldn't get the image of Emma's sweaty ass cheeks out of my head.
'I shouldn't be thinking about my sister like that!' I felt disgusted with myself but I was still hard in my shorts as I occasionally took glances over at her figure.
'Maybe I should take a nap' I sighed as I leaned back on the towel and looked up at the bright sky with no cloud in sight.
Time passed slowly as I opened my eye's and glanced to my side seeing Emma still sun tanning before my eye's went toward a group that was looking this way and I was surprised as my eye's went wide.
'Is that?' The group consisted of three young boy's who were my age but I recognized them as they walked this way.
"Hey what's up" The first boy had golden blond hair and waved his hand as he saw me.
"What's up Elijah" I greeted him back before looking toward the two other boys who had brown and black hair
"Willam, liam" I nodded at them and they smiled and greeted me back.
I wouldn't say I was friends with them but I knew all three from school, They were in the same grade as me so I've talked to them many times and we had similar friend groups. I normally wouldn't care if I saw them but I could see all three of their eye's go toward Emma's sweaty body and her doughy ass making me uncomfortable.
"You come to the beach alone?" I asked and Elijah shook his head as pointed toward the other side of the beach.
"Will's mom took Us" Elijah said with and willam nodded conforming the word's before Elijah looked toward Emma.
"Is that your sister" Elijah asked as his eyes stared right at the sweaty crevice of Emma's ass cheeks.
"Yea that's my elder sister Emma" I frowned at him and was planning to tell him to leave me alone when we heard Emma groan.
"Ughh that was a good nap!" My sister groaned as she opened her eye's and looked toward me before her eye's landed on the three boys.
"Oh who are you?" Emma asked as she leaned up on her hand causing her sweaty breasts to hang to the towel with just her nipples covered.