Ah, blast can mean a mass of air that moves fast and forcefully outward, as in a powerful explosion to have a blast.

Jonathan, did you have a blast at Malik's birthday party last night or what?

I had such a blast.

That guy sure knows how to have a wild time.

It was almost as fun is our fishing trip.

I thought we read never to talk about that again.

The word blast has many meanings, but they are all related to something that is intense or powerful.

If you are having a blast, you are having an intensely good time.

If something happens at full blast, it means at the highest ski or greatest capacity, and that's English in a minutes.