While Boggis goes away to get his vehicle the three men decide to help the parson; they assume his car will not be big enough to easily carry the commode and fear he will lose interest in the deal once he discovers the piece will not fit inside. Since he is only requesting the legs, the farmers saw them off.
While Boggis departs to acquire his vehicle, the three men decide to assist the parson; they assume his car will not be large enough to comfortably accommodate the commode and fear he will lose interest in the deal upon discovering it won't fit inside. Since the parson is only requesting the legs, the farmers cut them off.