I do my best to not be obnoxious about it and I don't overcomplicate things in technical language.  But when I see an opportunity to bring it up, I usually take it.  It typically ends with them being intrigued and me parting ways with $5 or $10 of Bitcoin.  I've been doing this since very, very early on.  Lots of painful transactions were made looking back haha, but I have zero regrets.  Most forgot they had it, some were hooked and are now financially independent.