You are not allowed to judge me for this, it's my first time writing anything like this. Also I got some of this idea from tiktok.
Merlin spat out his gag, glaring at Arthur from the backseat. "This is hardly following regulation-"
Arthur yanked hard on the steering wheel, sending them spinning into an empty parking lot. When he turned in his seat, eyes blazing, Merlin almost shrank back. "We're both on the run from the entire government, which is your fault, might I add, and I don't trust your evil ass not to stamp me, literally or figuratively, in the back and I am this close to losing my temper. When he held up his hand, their thumb and index finger were already touching. "So if you spit out that gag one more time, I'm going to pull up to the next shop we pass and buy something that will really shut you up. Understood?"
Merlin let his unmasked eyes narrow, resisting the urge to lick his lips. "Why don't you come back here and try me?" Arthur stared at Merlin for a good while before checking to make sure they were in the clear. He climbed into the back with a glare that only made Merlin smirk with victory. "Good boy." He chuckled.
Arthur huffed, grabbing the back of Merlin's neck and pulling him closer. "This isn't for you." Arthur brought their lips together, roughly. There's a moment of nothingness before Arthur is being kissed back, just as rough.
Arthur pushed Merlin down until his back was on the seat, moving so he was on top of the other. He will admit there wasn't much room but he could work with it. This wasn't his first time in a car. Merlin's hands began to travel Arthur's body, or rather his abs more than anything. Arthur yanked Merlin's hands away, grabbing his wrists and pinning them against the window.
Arthur pulled away with a smirk, something cruel in his eyes. "Not yet." Merlin swallowed, not knowing whether to be incredibly turned on or to fear the man on top of him.
Arthur's lips hover over Merlin's neck, not quite making contact but Merlin can feel every movement and every breath nonetheless. Arthur softly leaned in and kissed Merlin's neck, a smirk lacing his face. Arthur holds onto Merlin's wrist with one hand, the other tracing his body, down to the end of his shirt.
Arthur looked up at Merlin who was already watching Arthur intensely. He nodded his head before Arthur pulled away, lifting Merlin's shirt. He let go over the other man's wrists as he took the shirt completely off.
Arthur reached down to Merlin's pants before there was a knock on the window. Merlin and Arthur quickly hid their faces against each other. "Hey, come on, knock that off you two." Arthur nods and glances just in time to watch the officer walk away.
Arthur slowly sits up, watching to make sure there was nobody else. He sighs, climbing back into the front, silently.
They were back on the run.