I am sure my Mother thought the same thing you would have thought if you had to wash my cum stained underpants, socks, tee shirts, and bed sheets. Personally, I do not think any Mother is shocked or surprised that their teenage son masturbates. They would probably be shocked or surprised if they had a teenage son who did not masturbate!

When I was in HS, one night around midnight I was downstairs in the living room getting settled for a nice long jerking session. Suddenly like something from a nightmare, my mother walks downstairs! My parents were both early sleepers and it was rare for them to be awake even at 10pm. I'm sitting on the couch in just my briefs. I had stuffed the porno tape beneath a throw pillow next to me. My mom walks directly up to me, lifts up the pillow and sees the tape, then says she was "looking for something," then walks out of the room and back up the stairs.

I have no fucking clue what she thought she was doing, why she came downstairs in the first place, made an extremely obvious step of "finding" my porn, then left.

Ok

Yes of course she knew
I used to try to hide it but their room was tight next to mine
My used tissues I forgot to throw away
Plus I used to it wearing my baseball jockstrap to jerk off
I loved how tightly it felt against my rock hard cock
I came in that thing a lot and would put it in the hamper