what to do about my son kissing another boy in school?

the other day at school my son told me another boy kissed him in the mouth i was upset that this happened .but no i found out after it happened in school my son was the one that started the whole kissing with this noy when i finally got to the truth . he told me it was something he seen on tv i am so upset at my self cause i forgot this movie had a small stupid seen in it that the guys kissed as a joke he seen it i didn't know he would go and copy it .what am i to do about this is this normal for a four yr old boy to do this . what steps besides making sure he doesn't see this on tv agian .how should i deal with this .he is my one and only child.

[mammo]

You just ignore it.  At this age they think nothing of kissing the same sex child, especially if they are buddies.  I'm sure it's not something that happens often with him, but if you make a big deal out of this, you will send him the wrong message.  Relax, he's fine.