It was the summer between high school and freshman year at college, and my parents were throwing one of their famous parties for their friends. Basically it was all 'old' people (so I thought at the time) who basically just drank for hours, ate a ridiculous amount of food, and often didn't see the last people leave until the next day. They only had a few a year, but it was all their social circle would talk about for months after.
This night started off no different than the many other parties I had been through. I made quick appearances, said 'hi' here, hugs where appropriate there, suffered the normal litany of comments about how big I'd gotten, and a slew of the same questions about college plans.
As soon as I could I would duck out to play video games, or just hide in general. I was fairly successful for most of the night, braving the crowds only when I needed more snacks or drinks.
The party was still going fairly strong when 1am rolled around, and I decided to call it a night. I made a quick round, told my dad goodnight, and a few others, couldn't find mom at all, then headed to my room.
With the door shut behind me, the party noise muted at last, I got undressed, grabbed a hand towel, pumped a squirt of lotion in my palm, hit the lights, and laid back on the bed to enjoy a leisurely stroke before going to sleep.
When I jerk off I try to make it last as long as possible, without rubbing myself raw of course. I use long, slow strokes, alternate pressure, and spend time enjoying whatever the object of my fantasy might be at that time. Due to this I was pretty deep in my self pleasure when the door opened, and my mom flicked the light on.
Someone had forgotten to lock the door.
The sudden change from light to dark, combined with coming out of my fantasy to what was going on in my room caused me to hesitate for a fraction of a second, before grabbing the only thing near me, my hand towel, shoving it over my throbbing cock, trying to cover myself.
"Mom! Knock!" I squeaked out, sitting up, trying to make the towel cover as much of my nakedness as I could.
Mom, for her part, seemed fairly oblivious. She shut the door behind her, obviously unsteady on her feet even in my panicked eyes.
Her maroon tank top had a small stain above her right breast, it looked like she had halfheartedly tried to dab it away with something, and only manage to make a larger wet spot on her tight shirt.
She made her way over to the bed, barefoot, her heels lost some time ago whether for comfort or because she truly lost them I'd never found out. Without her heels on she came to my shoulder height when standing, something she always seemed immensely proud of for some reason,
"Sorry.. Sorry honey. I just wanted to come say, say goodnight."
She reached out and ruffled my hair, smiling a drunken smile, then sat heavily next to me on my left, shoulder to shoulder on the bed. I could smell the alcohol sweating out of her. She was absolutely wasted.
Regardless I still tried my best to cover myself, and my maddeningly hard cock still bouncing to my heartbeat covered only by a small hand towel.
"What.. what's wrong, honey?" It literally did not sink in to her that something was amiss until that moment.
"It's just that, you need to knock mom. You know that." I said, calmer.
"I know, I just wanted to say good night. I.. what.. what are you covering?" Without pausing, she reached across with her left hand and plucked the hand towel away.
