I think I see the problem.
I think I see the problem as well...
“The man, unable to swim, jumped into the water to cool off”
It’s like saying a man, incapable of withstanding the explosion of a ton of TNT, sat atop it and lit the fuse just to warm himself up...
From what I read into it, the “to cool off” may mean he was having a big argument with the chick that was getting too heated.