Hot spot and blood boiling

[Over the top]

That really got his blood boiling. I'll tell you, when he talked about the fornicators. That was his real hot spot.

What does blood boiling mean?
What does hot spot mean?
Thank you : D

[Gillnetter]

That really got his blood boiling. I'll tell you, when he talked about the fornicators. That was his real hot spot.

What does blood boiling mean? He became very angry.
What does hot spot mean? Something that made him very angry.
Thank you : D

Gil

[Over the top]

Is the term fornication still used these days?

[Tdol]

In some contexts- some preachers, for instance, might use it, but it sounds old-fashioned to me.