I didn’t really make my guess, but I was thinking Ace of ♠️ anyway.
Joker is much better, and quite fitting. I snickered audibly. Although…the funny thing was that somebody beat me to it! It was flipped when I got there.
Also quite fitting.
And one more funny thing…this Joker was riding a bicycle. Perfect for this triathlete and trainer, and for the location by a path where many people cycle every day.
*See my prior posts if you have no clue what I’m talking about.