The problem with forgetting your leech socks is you end up going through a lot of regular socks. I suppose you could just call them "leeched socks."
Left foot. Absolutely painless, but the vast quantities of blood are stress inducing nonetheless. Leeches apparently have a combination therapy analgesic and anticoagulant which they apply while incising, so that even if you catch them at their meals and flick them off, the wound continues to bleed. And bleed.