Being stone can simply mean that you won't ever be penetrated, or that you won't ever penetrate someone else, but it can also mean:
"I'm ok with receiving oral sex, but I do not want to be penetrated."
"I do not want to receive oral sex, but I do like to wear a strap and have that played with/sucked, etc."
"I do not want anyone (other than me/not even me) to touch me from the waist down."
"I'm ok with having my breasts/chest touched, but not my vagina/hole/cock/t-dick/strap."
"I'm dysphoric about my breasts/chest and would rather no one touched/played with it."
"It takes time for me to warm up to someone, and until then, I do not want any part of my body touched. Period."
"I'm ok with using certain toys to stimulate certain parts of my body, but I'd rather no one touched me in those same ways."
"I'm ok with performing oral sex on someone else, but am not comfortable with penetrating them."
"I'm ok with being penetrated, but do not want to perform oral sex on someone else."
"I'm ok with touching/playing with someone else's breasts/chest, but would rather not touch them below the waist."
You can learn and build the boundaries that will better work for yourself. You can communicate those boundaries to a partner. Those boundaries are valid, they should be respected, and they do not make you any less worthy of being listened to, in a space where you feel safe to change your mind, say no at any time knowing your partner will immediately stop.
