Enjoy yourself a little

You reach your hands forward, placing them on her hips as you stare at her ass.

"Hey! What do you think you're doing there?!"

"Oh, shut the fuck up for once, OK, princess?" you say, spreading her ass cheeks and releasing them, letting them clap together.

"I'm serious!" she growls. "Get off me, or I'll make your life a living hell! Do you hear me?!"

You chuckle, slapping her ass through her pants, your cock hardening in your pants. You lean forward, rubbing your bulge in-between her ass cheeks. She struggles back against you, but it involves her basically shaking all over your groin. As you push up, she grinds back against you.

"Yeah, that's not happening for three reasons. First, the year's almost done. You don't have time to do shit!"

You grab her ass cheek, squeezing it hard.

"Second, you've already... been making my life... a living hell, because... you're... a raging... bitch," you say, punctuating each pause with a hard slap against her ass, eliciting a light shriek from each one. "And third, I'm pretty sure everyone's changed their costumes. I could just leave you here."

You reach your hands around her waist, further pulling her onto your dick as you grope awkwardly at her small-to-medium sized tits, popping your hands underneath. Through this, you're able to take both her tits in your hands, squeezing and groping them eagerly, pulling nipples and continuing to dry-hump her ass.

"Fuck you, shithead," Gali says defiantly.

"If you say so," you chuckle.