Like most parents, my mom was uncomfortable talking to me about sex, but unlike most other parents, she recognized her discomfort as her problem and she did her best to work around it. She didn’t want me to have the same hangups. Fortunately, this was the 1970s, and she had a lot of resources available. There were lots of books about sex, and she gave me some, and left others around the house for me to read when I wanted.
At the time, I don’t think there was any specific law against allowing your kid to look at, say Playboy magazine, much less more explicit material. You’d probably get prosecuted for it now, which is reasonable. At that time, Playboy was still fairly softcore, just air-brushed breasts and gauzy drapes. And there were “nudist” or “natural” publications, with people having sex out in nature without the photo tricks used today, so you really couldn’t see much. I was allowed to look at those for a while, although I think the adults felt ishy about it, and soon put those away.
My great grandmother used to put out saucers of Coke to kill mice. She believed it worked because rodents can’t burp. I have no idea whether any of this is true.