My Girlfriend is a Rock

"I need a synonym for hard starting with an s." I heard Maud say.

I looked up from my laptop screen. Maud was at her desk, pen in her mouth.

"Hm... What about stiff?" I suggested.

"I used that."

"Solid." I tried.

"I used that."

"Sturdy?" I thought out loud.

"I haven't used that."

"Alright, glad to help." I finish with a smile.

I always enjoy helping Maud out with her rock poetry. "So, what's this one about? Cliffs, caves, calcium deposits?"

"It's erotic poetry."

There was five full seconds of awkward silence.

"I wanted to try something new."