Let's get this over with

Your brother begins to approach you. You sneer at him.

"Ugh. At least stick it in my mouth first." You know this is the only way your asshole brother would lube it up first, since he does this quite often. You do know the drill. "And you better at least stick it in my pussy first. Dad says you have to use lube before you stick things in my butt."

Your brother groans at you while offering the end of a key towards your mouth. You begin to open your mouth towards it.

"And no rough stuff, or I'm telling." You add, taking the end of the squared key into your mouth. Thankfully the car shared between you and your brother is a model new enough to have the type of key that almost appeared blank from the edges with the sharp ridges facing inward. You'd never allow it otherwise. You grimace as you try to get as much spit on the key as possible without touching it to your tongue.

"Time's up! Let's go." He says as he snatches the key out of your mouth and turns you around by a handful of your rear end. He spreads your legs by your upper thighs. You bend at the waist and brace yourself on the doorway, remembering your fishnet stocking defense measures just in time to feel Pete rip them away, popping several of the strings and pulling your thong aside. Shit. There goes those. Fucking asshole. Better remember to pick up another pair at the mall.

"On your mark!" He says, pressing the dull end of the wet key at your now exposed asshole and begins working his cock furiously like revving an engine.

"Get set!" He says, gruffly shoving the key inside and lining up his cock with your pussy, still jerking it rapidly. You wince at the corners of the squared key as it enters.

"Go!" He shouts, twisting the key then leaning his weight on it without letting go as he jams himself inside you at the same time. You grit your teeth hard.

"Ow! Not so roughGAAH! SLOW DOWN!"

Your brother dips in halfway and pulls out of your barely wet pussy, then quickly switches out the key for his now barely lubricated dick. All in a quick two thrusts. He's off to the races now, and he was only doing it enough so he can say he did if you decide to tell on him later. He begins rapidly pounding into you as fast as he can manage while you cry out.

"Fuck! Pete! Use more lube!" You shout into the hallway, hoping your parents can hear you.

"God, shut up bitch I'm almost fucking done," he says, still pounding you furiously. You grit your teeth more and clear your throat sharply as you wait for your brother to reach the finish line. He gets more rapid, slamming harder and harder as you brace yourself stiffly against the doorway.

This car borrow borrowing routine could end two ways. You hope he chooses your mouth. If he chooses your ass you might just skip the dose if you can get away with it.