There was just no phobia - and "disappeared". You were quite consciously and rationally not sure of your ability to hold onto the water, and therefore experienced quite a healthy fear (I can love snakes and rats - quite frankly - but to catch a wandering rat with a bat or a poisonous snake I will be afraid without any phobia).
And the friends suspiciously easily agreed to sit down for the unintentional in case there would suddenly be a real mental disorder, in which it would: 1) drown simply in bustling, 2) in panic hysteria drown the one who will try to save.

In general, if someone scratched without problems processed by a traveler, this is not a reason to declare at the discussion of the protrusion to the bone of the hand "and here when I was injured, no "Speed" needed".
I understand that words such as "homophobes", "spoilerophobes" and so on. I started associating phobia with the banal "I don't want to face", but the real phobia is a mental disorder.