Mason Jars - I very vaguely recall using jelly jars as a child for tea/juice/milk. Doesn't bother me one way or the other. As to why Sven is using them, why not? Probably is a case of a fan or band member he wrote music for either did canning themselves or knew someone who did, gave him the jars, he ate whatever was inside the jars, and decided "Meh, why not keep them around for when all the cups are in the sink/dishwasher."
Cracker Barrel - Having grown up in the Deep South I can say that when I'm REALLY hungry for Southern-ish food (now living in New Mexico) I'll go there. Is it the same as a real hole in the wall restaurant that tastes just like your grandma cooked it place? Not at all. Kitschy enough to make me forgive it for it's not so authentic Southern southern? Sure. And anyway who doesn't love sitting at the table with the peg board game waiting for your food?
That awkward brother sister talk - My brother and I haven't spoken in years - but I don't think this conversation would work for us even if we did speak on a regular basis.
Blue Balls - I'm not a man so I can't really speak to the condition itself, though I did have some friends who worked at planned parenthood (who had actually asked the clinicians) said that most of the condition itself is psychological, yes there is SOME pain, but the great majority of it (ironically) is in the guy's head. Not dismissing the amount of pain one might feel in such a situation of course.
Sven Creepy? - :S Sadly slightly yes.