 While in the bathroom , Bart notices that the water in the sink always drains counterclockwise . Lisa explains ( not entirely correctly ) that the water never drains the other way except in the southern hemisphere , due to the Coriolis effect , but Bart does not believe her . To confirm this , Bart makes phone calls to various countries in the southern hemisphere . Lisa points out how expensive international calls are , so Bart decides to make a collect call instead . He calls Australia , where a little boy answers the phone . Pretending to represent the " International Drainage Commission " , Bart is informed that the toilet and sink are both draining clockwise . Frustrated , Bart asks him to go and check the toilets of the neighbors . The call takes six hours to complete , since the boy lives in the outback , and Bart forgets to hang up the phone . Later , the boy 's father is billed A $ 900 ( referred to as " dollarydoos " ) . The father calls Bart and demands that he pay , but Bart only taunts him . Unfortunately for Bart , the father 's neighbour is a federal Member of Parliament , who reports Bart 's offense to the Prime Minister — who is relaxing naked in a nearby pond . 
 While in the bathroom , Bart <a href='uninflect' title='1'><mark>notices</mark></a> that the water in the sink always <a href='uninflect' title='2'><mark>drains</mark></a> counterclockwise . Lisa <a href='uninflect' title='3'><mark>explains</mark></a> ( not entirely correctly ) that the water never <a href='uninflect' title='4'><mark>drains</mark></a> the other way except in the southern hemisphere , due to <a href='None' title='5'><mark>the</mark></a>Coriolis <a href='negative_concord' title='6'><mark>effect</mark></a> , but Bart <a href='uninflect' title='7'><mark>does</mark></a> not believe her . To confirm this , Bart <a href='uninflect' title='8'><mark>makes</mark></a> phone calls to various countries in the southern hemisphere . Lisa <a href='uninflect' title='9'><mark>points</mark></a> out how expensive international calls are , so Bart <a href='uninflect' title='10'><mark>decides</mark></a> to make a collect call instead . He <a href='uninflect' title='11'><mark>calls</mark></a> Australia , where a little boy <a href='uninflect' title='12'><mark>answers</mark></a> the phone . Pretending to represent the " International Drainage Commission " , Bart is informed that the toilet and sink are both draining clockwise . Frustrated , Bart <a href='uninflect' title='13'><mark>asks</mark></a> him to go and check the toilets of the neighbors . The call <a href='uninflect' title='14'><mark>takes</mark></a> six hours to complete , since the boy <a href='uninflect' title='15'><mark>lives</mark></a> in the outback , and Bart <a href='uninflect' title='16'><mark>forgets</mark></a> to hang up the phone . Later , the boy <a href='null_genetive' title='17'><mark>'s</mark></a>father is billed A $ 900 ( referred to as " dollarydoos " ) . The father <a href='uninflect' title='18'><mark>calls</mark></a> Bart and <a href='uninflect' title='19'><mark>demands</mark></a> that he pay , but Bart only <a href='uninflect' title='20'><mark>taunts</mark></a> him . Unfortunately for Bart , the father <a href='null_genetive' title='21'><mark>'s</mark></a>neighbour <a href='drop_aux' title='22'><mark>is</mark></a>a federal Member of Parliament , <a href='null_relcl' title='23'><mark>who</mark></a><a href='uninflect' title='24'><mark>reports</mark></a> Bart <a href='null_genetive' title='25'><mark>'s</mark></a>offense to the Prime Minister — <a href='null_relcl' title='26'><mark>who</mark></a>is relaxing naked in a nearby pond . 
While in da bathroom , Bart notice dat the water in tdasink always drain counterclockwise . Lisa explain ( not entirely correctly ) tdatthe water never drain the other way except in the southern hemisphere , due to Coriolis no effect , but Bart do not believe her . To confirm this , Bart make phn calls to various countries in the southern hemisphere . Lisa point out how expensive international calls r , so Bart decide to make a collect call instead . He call Australia , where alil boy answer the phone . Pretending to represent thda International Drainage Commission " , Bart is informed thdathe toilet and sink are both draining clockwise . Frustrated , Bart ask him to go and check the toilets of thedaighbors . The call take six hours to complete , since the boy live in the outback , and Bart forget to hang up the daone Later , the boi  father is billed A $ 900 ( referred to as " dollarydoos " ) . The fdaer call Bart and demand thadat pay , but Bart only taunt em . Unfortunately for Bart , the father  neighbour a federal Member of Parliament , report Bart  offense to the Prda Minister — is relaxing naked in a nearby pond .