You should never use a mac on your lap if you are male because you can burn your balls. You can end up shooting blanks, these laptops can do heat castraton.
But he ran into a real problem: his computer began locking up. No warning, no prior glitches, just a hard lockup, and only a power-cycle could get it going again.
And I took one look at his setup and I said, "Dad, you need to ventilate that thing at the bottom. I bet your CPU is suffering an overheat condition."
And so Dad went out and he purchased a little laptop stand for the laptop, that contained fans in the base, and he set the laptop stand across his lap and put the laptop on the laptop stand. And he didn't even need to actively run the fans, but just the extra height and bottom ventilation did the trick, and his laptop never locked-up again, and he was overjoyed, along with the cat, and Mom as well. And they lived happily ever after.