That's what I call a tool
Pagan Prattle has made me laugh twice today.
What's smooth, cylindrical, and about 7½ inches long?
Another hint: it's hard enough to knap flints.
It's a 28,000 year old life-sized stone phallus*. Just the thing to keep tucked away in the back of the cave for those nights when mighty Thog, the manly stone-age warrior, is off on another long trek hunting mammoths. The fact that it was also used as a tool to flake flints gives us insight into the primeval meaning of the phrase, "whacking off".
*Personally, though, I think the interpretation of its use is stretching it a bit. Cold and heavy is not usually an erotic combination, and bedroom playthings don't typically double as shop tools. But then again, lacking plastic and silicone, who knows how creative minds will turn?


There were ways to get around the "cold" part of the "cold and heavy," even with Upper Paleolithic technology. Warming in fire (or against the skin) could have worked fine. Presumably women had access to abundant thin skins for "condoms" as well.
OK, it's handwaving, but it's fun handwaving.
"I do not think we should antagonize the religious when it is not warranted, though I think we should be willing to do so whenever it is.”
-- Glen Davidson