As a mother, you took care of your son in so many ways, and this includes cleaning his room, doing his dishes, as so on! Now that he is older, he has to do it all on his own. This is why he will appreciate this funny birthday card even more. He will certainly be able to relate to it. Let your son know that he can relax and enjoy his special day and not have to worry about anything else. Your son will feel like he has the best mother ever after he receives this great birthday card from you!