On fire

Dad has to go back to his hometown and tell his son:

-Hey son, I have to go back to my hometown. If anyone comes to ask dad, just say dad has go back to dad’s hometown, is it OK?.

-Yes, the son answered.

But the son was very foolish, the father was afraid he would forget, so he wrote on a piece of paper and gave it to the son, saying:

-Okay, dad wrote it on this paper. If anyone comes to ask Dad, just give them this piece of paper to tell them to read, do you understand?

-Yes.

Then my father returned hometown with peace of mind.

At home, all afternoon, no one came to ask his dad.

In the evening, the curious son took out a piece of paper and read it next to the oil lamp. Unfortunately, the piece of paper burned away.

The next day, a guest came to ask about dad, and called out from the alley:

-Honey, is your dad at home?

-No, it’s gone.

-Huh, when was that?-The guest asked in surprise.

-Gone last night.

-Oh my God. How did your dad died?

-On fire.///