louthouse
Da outdoor WC dat you make da less-caring/desirable of your guests use instead of da indoor washroom.
One of da most notorious ways dat a deadbeat party-guest shows his insensitive "devil-may-care" side is by shamelessly hogging da bathroom for extended periods, and so sending him to da louthouse is doubly a good way of dealing wif dis --- it gets his spirits-dampening self outta da crowd of more-desirable attendees, and lets him take as long as he wants to "finish up", without delaying other folks who may need to "spend a penny" throughout da party-time.