I'm getting too old for this!

I've just spent the last week working in the warehouse, packaging  foam & finally loading the truck today.  I've gotten up early & worked late every day. I've told hubby I am too old for all this maunual, heavy labor.  I hope someday he'll open his ears so he can hear what I'm saying.  He's working terrbily hard too & he's 10 years older than me. I don't know how he does it.  On a better note, my son loves his new job & he's making very good money so I am so happy for him.

Seven year old possesses adult body!

Why is it adult children sometimes revert to seven years old when dealing with their parents?
This week my 34 year old son totally lost his temper then later said he only reacts this way when he's in our home!  Really?  From his perspective I sometimes bring out the worst in him.  He has temper  tantrums that he is well beyond except when he comes home.  I told him I'm sorry he feels that way which pissed him off some more.  I honestly do not know why he got so angry.  He works for us and had planned on taking our semi-truck so he could take his daughter, dog & girlfriend with him for a week on the road.  He just assumed that would be perfectly fine but didn't ask before hand.  The truck window and heater both needed to be fixed, which couldn't be done immediately, so he couldn't take that truck.  The other truck he could take would only carry one additional person.  He couldn't get his way so the tantrum began.  The next day I told him I expected him to pay a ticket he got which was not associated with equipment but was because he didn't keep his log book up to date.  Well here we go again.  Cussing & yelling just like yesterday except by text! 
When he got back on Friday he was apologetic but come on, how am I responsible for your fits.  And what is it I am doing that is so wrong?  I just don't get it, I wouldn't let any other employee do some of the things he does but he thinks that is one of the good benefits about working for me!  And I certainly wouldn't put up with another employee cussing me out.  This just can't go on.