The first time I attended a church where people spoke in tongues I was with my mother in law. Before services I heard someone screaming in the back room, I asked my mother in law what was going on, she told me that it was just someone receiving the Lord(speaking in tongues). Being that I grew up attending the Kingdom Hall where you could hear a pin drop during the meetings, this yelling and screaming really creeped me out.
Have you noticed that it always seems like the same type of people see U.F.O.s and the same type of people take rides with aliens, you know the springer types with the banjos on their knees.
In general speaking in tongues follows the same pattern, you're dealing with people with low education and an intense desire to be accepted and noticed. The truth hurts.
"Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life."
Terry Pratchett.