I drunkenly bought $100 worth in 2015 after a terrible night tending bar. After a little while, I gave some away trying to get people interested. I gambled some testing out bitcoin gambling sites to try to get people interested.
After everything was said and done, I still had .42 BTC. It's been sitting in it's own wallet in cold storage for awhile now.
I simply tell people the story and show them what "I have left" out of that first buy.
It's an attention getter.