Thicc Gaz if she was your sister

>Be sibling of Gaz
>Learn real quickly growing up not to piss her off
>Annoyance and anger are one and the same to her and there hasn't been any point in either of your lives she can't beat your ass into the ground
>Though over the years manage to work things out, you're pretty sure you're one of the few people she likes
>Well, it takes her about twice as long to get pissed and take a swing at you than anyone else (a full two minutes!) and she'll often seek you out to rant about what/whoever annoyed her today or just hang around you and play video games
>You can even babble to her about game builds and strategies and she'll tell you why you're wrong half the time (albeit with a HEAVY amount of words like "moron" and "stupid" thrown in)
>You're pretty sure that's as close to "like" as she can get

>But man, things are starting to get weird recently
>Well, it started a few years ago actually, but only recently have you been afraid to make it weird
>A while ago she hit a growth spurt but kept wearing the same sized clothes
>Kinda unexpected, but you guess even a girl like her wants to show off her figure
>Or maybe dad just failed to notice you two need new clothes again
>Could be either/or really
>The problems really only started when her diet of nothing but greasy pizza and soda finally caught up to her, but somehow, not in a bad way
>She's ballooned in size sure, but it's gone to ALL the right places
>Her top is fighting a losing battle every day, you're honestly baffled the poor things haven't burst
>Her skirt doesn't even really cover her ass anymore, at best she'll present the pretense of modesty by wearing some tights under them, but more often than a set of long black socks pulled high are the only thing covering her thighs these days
>And worst of all she's STILL prone to wrestling you to the ground, pinning you under her, and giving you an ass beating when you bug her
>You REALLY hope she never figures out what she's doing to you during those moments
>You should NOT be thinking such things about your sister
>Especially one who would, and you're pretty sure has on at least two separate occasions, killed a man for hitting on her
>You could have sworn she found out once
>When she was straddling your waist about to give you another black eye and just hesitated for a moment, a look of confusion on her face as you could feel yourself rub up against her
>Once her fist met your face nothing out of the usual happened though
>She HAS been hanging around you more, though that seems to be because she'd decided you make a good gofer, ordering you to get her more pizza or batteries
>And of course getting pissed at you more often for "bugging" her or "taking too long"
>But really nothing out of the ordinary
>Or at least you thought, until today
>You walked into the room to find her in a particularly bad mood
>Babbling an apology for whatever it was you did, she just mutters "Moron" and knocks you flat on your back
>As stars dance in your vision and she stands over you, you could have almost sworn you saw her fondly smiling down at you
>Probably just the concussion you think as you blackout
>You wake up about a minute or two later on her bed
>Not that you noticed it at the time, what with Gaz's thick, pillowy ass hovering ovr your face
>"Took you long enough" she complains as you try to figure out if she's not wearing panties or if her butt has just swallowed them up
>Before you can ask what she's doing she just plops down, smothering you under what feels like 20lb of ass and it quickly becomes VERY apparent she's not wearing anything
>"Keep licking, don't make me mess up," she orders as she grinds into you, working your head and face deep between her cheeks, "Or I won't let you have some air when I beat a level"
>A muffled, "Do a good job and I'll play pick out a game we can play a strip 2 play match in" is the last thing you hear before she painfully flexes her buns and reminds you to get to work