i can pop quite a few joints loudly
I can pop my main three fingers in two ways each, and my pinkies and thumbs one way each
and my back
and my elbows
and my neck, usually at least two audible pops each direction
sometimes my toes
and if I'm standing, sometimes I can pop my knees
that's it though
other than just regularly popping an absurd amount of joints, I don't really have anything like what you guys are talking about