Make the game more difficult ..
From Create Your Own Story
The next round I felt a hand on my groin and undoing my trousers, I tried to concentrate on the tits but as those hands slip inside my undies and stroked my rock hard cock I lost all skill at identifying who's tits they were, but who cares ?
Then round three, the girls all giggled but no cock stroking to put me off this time, but try as I could I couldn't decide who's tits they were !
"If you give up, or get it wrong, we win and we get to choose a dare for you !"
But I couldn't choose so took off my blindfold, it was Mom ! She giggled.