Is it me or did I just hear a voice?

When I read, I start to visualize the setting and what the characters look like. The book doesn't even have to give details to show what something looks like. I just see it right there in front of my face. Sometimes I can hear what the characters are saying and their facial expressions when they say it. One thing to make myself laugh while I read is to read out loud in a different accent; for example I speak European, Jamaican, African, and sometimes I speak Spanish(I just make up some sounds).