Do you pop your knuckles (or possibly other joints)?

I ask this because it drives my boyfriend up the wall to hear anyone popping their knuckles and he doesn't do it himself. Some of it I can't control like my ankles tend to pop when I'm stretching when laying in bed in the morning (no idea why), but for the most part I don't do it willingly.

So how about you? Do you willingly pop your knuckles or other joints? If so, which ones do you do most often?
Do you pop your knuckles (or possibly other joints)?
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