The Most-Hated Question, but applied to Jazz - "You play guitar? Play us something."

You have guests in your home and someone sees your guitars. They're naturally curious, and ask you to play something. What's your default?

You're by yourself, no band supporting you. Do you: - go through the trouble of starting a backing track, so you can play the melody then solo over a standard? - play a chord-melody song by yourself? - play a non-jazz tune that more easily lends itself to solo guitar? - something else?

I'm an amateur, so my practice time is limited. Wondering what my best option is.

Thanks!