TIFU by masturbating without closing the door

Obligatory this didn’t actually happen today but in high school blah blah blah. Also it’s a little graphic, so sorry in advance if it’s too gross lmao. This is probably my most embarrassing sex story.

So I was lying in bed and suddenly got the urge to jack it. No big deal, I just take off my pants and get going. Now here’s the thing, my bedroom door was open. I was fully aware of this, but instead of just closing the door, I decided to jerk off under the blanket so that if anyone walked by they wouldn’t see me.

Right as I’m about to climax I hear my dad calling me and walking toward my bedroom. My stupid horny teenage about-to-cum brain decided to just full throttle the orgasm. Cum now, think later. So I do, and now I’m lying there with cum on my belly.

My dad walks up to my room and stands in the doorframe. I’m still under the blanket, so he can’t tell what’s just happened. He starts a casual conversation, “What do you want for dinner?” I am staring at him like a deer in headlights, hand gripping my penis, barely processing his words out of a combination of post-nut blankness and crippling fear that my dad will find me out. But he seems none the wiser as through our entire 1 minute conversation I’m still sitting there in jerking-off position under the blanket.

But then he walks further into the room. He sniffs. He asks,

What’s that smell?

I stare at him mortified not knowing what to say. He stares back at me blankly, waiting for an answer. All of a sudden his eyes widen with understanding, and he quickly bolts from the room without saying a word, closing the door behind him, and promptly taking a shower. I feel like melting into my bed I’m so embarrassed.

TL;DR: jerked off, dad walked in before I could clean up, and he only realized once he smelled the semen.