He has to open his mouth wide so that we hit the target. Lady Luciana and I spit directly into the slave's mouth and fill it with our saliva. We take it in turns to let our spit drip down into the slave's mouth. Sometimes a little misses and messes up his mask. Now he looks like a disgusting spitface! Lady Luciana and I humiliate him and only let him go when his thirst is quenched.