I particularly like this.. I already enforce the whole day to day sub thing, but this has changed it.. now she doesnt only serve me and my friends in whatever clothing I choose, she also has to offer to please whoever she is serving if they so desire it.. my best mate has started a trend - we ask for shots of tequila, when she brings it to whoever asked, we'll ask her to suck their dick, make them cum into the tequila shot, and then we make her drink it..
Result: a seriously wasted girl full of cum..