Fiona makes a getaway

As you bask in the afterglow of your intense orgasm, Fiona lets your cock pop out of her mouth and heads over to her clothes, discarded nearby. She dresses in record time, and doesn't even make a parting taunt as she heads for the door, only quickly remarking that she's "late for <something unintelligible>".

You stare nonplussed at her uncharacteristic behavior. After making you cum so hard and revealing that she's shared a picture of you sucking cock with your girlfriend, you expect your sister to start bragging rather than making a hasty retreat.

Not long after Fiona leaves the house though, you hear footsteps, and realize you're sitting on the couch pants-less, with cum dripping all over you, the couch and the floor. Your reeling brain finally connects the dots right as your mother steps into the room, catching sight of the mess.

You can tell from her expression that she's pissed, and you stammer a bit as you try to explain yourself. "U-uh, it was Fiona-"

Your mother rolls her eyes, looking exasperated. "I know that." She gestures at the amount of semen all over the place. "Even Elsie doesn't let out that much, let alone you. But..." She glares at you, making you sweat. "You're almost as much to blame as Fiona...who is in a lot of trouble once I find her. If you want to give blowjobs in the living room, swallow."

You start to open your mouth to retort about not having even really given Fiona a blowjob in the first place...you only used your mouth for a tiny bit after she'd already made a mess. You think better of it though...telling her you stroked Fiona off without any really plan for where all her cum was going to land won't go over well.

"S-sorry, it was too big for my mouth." It's humiliating to tacitly 'confess' to sucking cock in front of your own mother, but making it sound like you just failed to contain Fiona's giant member seems like the story that gives you the least blame.

Maybe it's the plausibility of your story or maybe it's the pitifully wronged expression you put on your face, but your mother's expression softens slightly - though she's obviously still not in a good mood.

"Well...that is understandable. Fine, here's what we'll do. This one time you get a free pass. But tonight, come to my room so I can teach you how to keep this from happening again...okay?"

Barely waiting for your nod, she waves you away. "Alright, now go away, I need to clean this before stains set in..."