J.W.
It sounds like algae.
I can tell you I get it every once in a while if I leave the hose out when it starts getting cool. Then again I have never rubbed it on my skin, not really sure why you did that.
No seriously why did you do that? Oh, look, slimy stuff, lets rub it on our skin, who does that?
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I don't know the type of algae but it also grows in the evaporator hose on my coil.