Tom felt as if his heart was going to explode.

My head felt as if it was going to explode.

For a moment I thought that my body was going to explode.

For a moment, she thought he was going to explode.

The woman's face turned so red that I thought she was going to explode.

The president looked as if he were going to explode.

Guys weren't saying much, just looking at each other like they were going to explode if this didn't change soon.

But then there are other days when I think my head is going to explode.

He felt as if his heart was going to explode any second.