It could have been both, perhaps? There are people who believe the things they see to be of vast importance when they're high as a kite. I've never been, so I can't say that funny visions might not have some value in them. I can, however, have strong doubt in it until proven otherwise.

I don't think I've been down by the lake, so no. Are they native to Asgard? They'd surely seem out of place...