We had a brother that was on heavy duty drugs for most of his life, before becoming a JW. He used to raise his hand all the time to answer a question, if he didn't get called on, he would shout out the answer.
Before and after the meetings, he would come and stand in front of you, with is hands together staring, smiling so big, you could see all the teeth in his mouth, but wouldn't say a word, just stared, drove me nuts. I used to hide from him.