Thick hips rock against the edge of the black office chair as she oils her own skin, fingers tracing every curve. The green lace bra barely contains her heavy tits, nipples already hard against the fabric. One hand grips the armrest while the other slides down between her thighs, pressing against the damp lace. Her ass lifts slightly off the seat, grinding in slow circles as the oil glistens under the lamp. Watching herself in the small mirror on the desk, she bites her lower lip, hips rolling faster, thighs trembling. The chair groans under her weight, but she doesn’t stop — not until her breath comes in short gasps and her thighs shake.