I waited for her to finish, and when she calmed down, I unzipped the constume as it was getting rather hot in there. Erin was panting, and I saw my cum all over her backside.
"Your cum," Erin panted. "It got me so hot!"
She turned around, still inside the costume, and pressed her crotch against mine. My dick jabbed at her stomach. She moaned pleasantly as she ground into me.
"That was so good!" I said.
"I was kinda hoping to get laid tonight," she smiled. "What do you say?"
I couldn't believe she just asked me to fuck her! After what had just happened, it seemed only logical. She grabbed my dick and guided it to her pussy. I felt her hot hole as it touched the head of my dick.
"Are you sure?" I asked.