I’ve lived for 33 years, 12 or so if those years heavily featuring K’nex and only after reading your comment realised that K’nex is a phonetic play on “connects”.

The point of that meme as I took it is to illustrate the uncertainty women face when it comes to the intentions of (strange) men. The bear, an actual killer, at least is predictable. Not a criticism of your hot take btw, just sharing my thoughts on this meme.

I don’t remember a friends episode about this either. I do remember it being on how I met your mother though so possibly the person you’re replying to was thinking of that.