Not including encounters au naturale:
Kali (Red Blood) tagged me fresh on arrival - but transit is bound to make any snake grumpy so I didnt take it personally.
Lilith (Liasis fuscus) let me have it, but she tends to really telegraph her intentions so the bite I saw coming
(posture = not a happy camper)
her recoil and vault over the opposite rim of the sterelite caught me totally offguard though lol.
(EDIT: and stupid handling error - after letting BPs rest on my neck while cleaning their enclosures I was doing the same with the California King, who found the BP scent rather appetizing and decided to try a nibble or three)