My 4 year old son was found under his bed with his 4 year old female friend. When they came out from under the bed, the girl's panties were pulled down. My wife and the girl's mother were there, and asked them what happened. They (the children) both said that my son pulled the girls pants down and he touched her in her "area". He said he just wanted to see. A few days later the girl told her parents that my son had kissed her in this area as well. When we questioned him, he said that was true, and that he forgot or didn't want to tell that part originally, (kind of hard to get a straight answer from a 4 year old). Anyway, I want to know if this is normal behavior, and what sort of actions should be taken. Any input on this subject would be appreciated.