More dupe buggs

so me and my sis were playing with pig saddles and if u hit a pig and jump off they reach great speeds and zoom everywhere and if the pig dies from fall damage or I slain with a looting sword it dupes the saddles 2-4 at a time and as like the grind stone dupe if u do the same with an anvil u can make infinaite items as long as u have lot of xp and anvils wich are dupes to create massive dupe stashed items