As for knots - they say there is a significant interception in the center of the venn diagram of shibarists, scouts and climbers, not that sure about mathematicians though
I'm amused at the notion of a mathematical "shibarist" (I don't know Japanese but I understand that -ka might be the proper suffix). You've got some kinkster who wants to get tied up, but the knot nerd keeps trying to compute invariants...
