"Girls, for this evening, I've come up with what I hope will be a really fun and exciting game for three. I'll be explaining the details as I... Hmmm, set up with the necessary... Accessories to play. But first, we need to determine the roles each of you will take, so decide which one of you prefers steel and which one prefers latex..."
A bit more cruel and painful than the usual tickling, but on the other hand, with both girls participating voluntarily. 🙃