The father buys,the son bigs,the grandchild sells,and his son thigs.
父買、子修建、孫兒賣,重孫街上當乞丐。
Many people find this sort of joke distasteful The following example of 'sick humour' will enable you to judge for yourself.
許多人認為這種笑話是低級庸俗的。下面是個“病態幽默”的實例,你可據此自己作出判斷。