'Hold up your side of things'?

[Mehrgan]

Hi all,
I was reading this interesting piece of joke (reality!), when I couldn't get the meaning of the underlined section. Hope someone can help me with this, please.

After being married for 40 years, I took a careful look at my wife one day and said ....... "Forty years ago we had a cheap house, a junk car, slept on a sofa bed and watched a 10-inch black and white TV, but I got to sleep every night with a hot 23-year-old girl.

Now ... I have a $500,000.00 home, a $35,000.00 car, a nice big bed and a large screen TV, but I'm sleeping with a 65-year-old woman. It seems to me that you're not holding up your side of things."

My wife is a very reasonable woman. She told me to go out and find a hot 23-year-old girl and she would make sure that I would once again be living in a cheap house, driving a junk car, sleeping on a sofa bed and watching a 10-inch black and white TV.

Aren't older women great? They really know how to solve an old guy's problems.

[5jj]

Now ... I have a $500,000.00 home, a $35,000.00 car, a nice big bed and a large screen TV, but I'm sleeping with a 65-year-old woman. It seems to me that you're not holding up your side of things."

You are not doing your share. You haven't done/aren't doing as much for the relationship as I have/am.