They need to be marked to tell them apart... bruises would work but would be temporary... perhaps a brand or cut... ?
You are right. A brand would probably be best.
https://www.renderotica.com/store/sku/61467_FemCarver-Branding-Set 😁
Lov it. Thank you
If a cattle prod was used on one girls's breasts would the current flow through the chain or physical contact enough to shock the other one...?
Yes most defenetly. They would both have very sore rectums.