https://archiveofourown.org/works/93648191/chapters/249955526
With one finger running back and forth along the hem of the blanket, Rocky trills quietly. "Grace sure, question?"
"If I can help you, I'm going to. You and I have already, uh-" hmmm, how to put it delicately? Does he even have to any more? (He does - it still makes him blush.) "- I mean we both know what we've done together. This doesn't seem much different."
"Yes." Rocky traces his finger back and forth a few more times. "But will not be like intercourse. Eridian reaction to egg expulsion can be... intense."
"Yup, I'm sure. C'mon- " Grace claps his hands. "Let's rock and roll."
Rocky retracts. "Does not involve rolling Rocky anywhere."