Funny conversations with a 4 year-old about work and money

Lately, I'm finding myself very amused, challenged and sometimes trapped by the conversations I'm having with my son. You see, he's starting to make some very interesting arguments and I can't really dismiss him as I used to do by simplifying an answer, avoiding a subject or simply lying straight-forward to his little innocent face.
Let me give you some recent funny examples.

Example #1 - A few months ago when I was not working anymore.
F - Mom, can you buy me this? (can't remember exactly what it was)
Me - No
F - Why?
Me - Because, I can't just buy you everything we see
F - Why?
Me - It's expensive and I don't have the money
F - So, I have an idea! Why don't you ask if you can go back to your office tomorrow, just for one day, and you make some money, so we can come back and buy it!

Example #2 - Monday morning
F - Mom, why was Daddy home yesterday?
Me - Well, because it was Sunday (simplifying the answer)
F - So, why was he home and not at the office?
Me - Because the office was closed (lying on his innocent face)
F - That's not true (he caught me!), because Dad's office never closes.

Example #3 - Sunday morning, having breakfast. J (my husband) had to work and I was complaining about it. F steps in the conversation, telling me to stop complaining and giving me the reasons why his Dad had to work so hard.
F - Dad needs to work a lot so we can pay my school, our food, my clothes, my toys and Santa
Me - What? We don't pay Santa...
F - Of course we have to send him some money! Otherwise how can he make all the toys for us and pay his elves?!
Me - speechless; I had never thought about Santa that way...
J - He has a point...

I wish I could give the proper credits to the picture above, but I was unable to identify the author. I just took it from the web...