Lisa straps on a bigger strap-on dildo and makes Sandy beg to suck it. She gives her TS slut very precise instructions on how to service her black dildo and when Sandy makes a mistake she is viciously bitch slapped for not listening and for gagging. Lisa tells Sandy she must always obey the customer no matter how mean or cruel they may be. Lisa leaves the dildo in Sandy's mouth and orders her to continue sucking until she returns with a surprise.