Usually when you have a swashy hat on, the guards are supposed to chase you right?
Was being chased by a shadow. Ran past guard, and stole some flowers. Guard chased me as expected.
I put on the swashy hat. Guard stopped chasing me, but continued shouting insults at me/the shadow while running around in the same area.
Continued stealing flowers, guard still running in same area until I got close enough, or got sane enough that shadow despawned (unsure which), but seemed to reaggress him when I stole the last few flowers.
Also, guard was walking around with a torch during the day (other guards I ran past earlier had their regular axes out).
Be insane and have a shadow chasing. Steal flowers. Put on swashy hat. Check reaction. Steal more flowers. (Please see clip)