A/N: A veeery short one, but what it lacks in length it makes up for in content. I hope. Since it's so short I might add another drabble or two if people want.
Elsa dug into her purse, pulling out her phone and answering on the third ring. "Hey, I'll be home in a-"
"Elsa~!"
The blonde woman froze, her eyes widening. Another moan came through the earpiece and Elsa's breathing picked up.
"You still there?" Anna asked playfully, humming in Elsa's ear. The older woman nodded before she realized that her sister couldn't see her.
"Uh…Uh-huh."
"Good," the redhead purred, the sound of shifting clothing reaching Elsa's senses. "Now listen very carefully. Are you listening?"
"Mmh." Elsa responded, glancing around. Nobody was looking at her, but she felt as though she was being watched.
"Good girl. I'm going to tell you what I'm doing right now, okay?"
"Uh-huh," Elsa rasped, clutching the phone to her face and scurrying through the store.
"I'm, unf, sliding a finger across my slit - it's already wet for you, you know - circling around my hardened clit. Oooh, Elsa!" Anna groaned and in her mind eye Elsa could see her bucking her hips against her hand. She almost dropped her phone when she heard Anna's breath hitch, knowing that meant she'd entered herself. "I'm inside," Anna informed her, her tone aroused and amused. "I'm fucking myself with one… two… three of my fingers…" Her voice grew strained. "Stretching myself as they go in and out of my slick cunt." Elsa licked her lips, her mouth going dry. "Elsa?"
"Yeah?"
"Mmmn. Just making sure you're still there." Anna gave a gasp and a mewl and Elsa's face flushed red.
"Oh god…"
"Mmm, call me Anna," the younger woman teased. There was a pause. "Ohshitparentsarehomegottago-"
And the line disconnected.