YOU SAID:

when pigs fly then I will die because I will eat a poisons pie

INTO JAPANESE

豚が飛ぶとき、私は死んでしまうので毒パイを食べる

BACK INTO ENGLISH

I would die when pigs can fly, so poison to eat pie

INTO JAPANESE

豚が飛ぶことができるとき、私は死んでしまうので毒パイを食べる

BACK INTO ENGLISH

I would die when pigs can fly, so poison to eat pie