If kids see a man and a woman slobbering over each other in the park and they say OOOH and start laughing, does that make them prudes?<quoted text>
Let me ask you something.
If two gay men walk down the street to a local park and start kissing in front of a group of kids, do you think any of the kids will think what the two men are doing is weird, unusual, or abnormal?
If the any of the kids do think that this behavior is weird/ususual/abnormal, does this automatically make the kids a bunch of bigots?
On the other hand, if you see two men or two women walking through the park, and your child asks you why: Just say because they love each other and feel comfortable in physical contact with each other--just like mommy and daddy. You're kids won't find anything weird about that.