Yes

I started to rub her skin lower and lower.The tips of my fingers slid underneath her blouse. She must know what I was doing. I started to feel the swell of her small breasts.
The demure, quiet looking school teacher type was letting me put my hand inside her blouse. My fingers reached her nipple and still she said nothing. I began to rub it with the end of my middle finger. Still no complaint. My other hand went straight in to her other tit. As I cupped both breasts there was a slight moan from Joy. My dick had not been this hard since I was a teenager. It was also pressing against the back of Joy’s head.
“Oh dear”, said a voice just behind me. “She is such a tart”.
I removed my hands quickly.
“No,no”,said Brenda, “put them back. Joy likes it, you like it and I like to see Joy enjoying herself. It will cost her though.”
I did as I was told.
Brenda walked around to the front of us. She undid the remaining buttons of Joys’ blouse. I could see all of her tits and stomach. Her skin was a bit wrinkled in places, but not bad for 60.
“Now stand up Joy”, ordered Brenda.
“Oh please don’t do this”, said Joy very quietly.
“Do as I say”.
Joy obeyed.
“Remove her blouse”, Brenda said to me.
Standing behind her, with the front open this was easy.
As I did this Brenda pulled her skirt and pants down quickly and roughly.
Joy was stood in the open air on a campsite totally naked.
“Now, Dave, lower your shorts. Joy is going to suck your cock”.