Richard could taste the sudden response Susan had to his attentions. As her wetness began to flow, he changed from just licking to thrusting into her opening with his tongue, then licking and sucking at her clit. He slipped his finger into her to wet it, then went back to playing with her arse, wetting it, relaxing the tight opening a little at a time as he rubbed and stroked her.
He grunted when Susan took him deep into her mouth, enjoying the sensation. When she giggled around his cock, he couldn't help but lift his hips toward her mouth, wanting more of what she was doing.