"Hats Off!"

I recently got this note from a colleague: “Thanks so much for what you’re doing and it sounds like you’ve made meaningful progress. My hats off to you guys!” 

I confess that I was puzzled. I know that this person habitually wears a number of different hats at different times, but I couldn’t get the rather confusing picture out of my mind of them wearing them all at once. Taking them all off at the same time would certainly present a challenge and I had an image of Kali with a hat in each hand.