I think that the electrons slowed down so much that they condensed. In turn the Ozone created as a result of condensation combined with free Hydrogen atoms and, of course, produced H2O. Hey... "It could Happen" !
Or something really bad happened and there is water running through the conduit that serves the outlet.
Either way, I am just fine looking at the picture and NOT trying to find the problem.
If sense were so common everyone would have it !
Any advice provided is worth exactly what you paid for it, not a penny more not, a penny less !!