Cause they are INSTANT SUPER MOODKILL for me (Talking dead ex girlfriend relationship song right at the top followed by two other songs with hellish conotations. Like seriously. Heard the intro to the second song whilst pulling it off youtube and I broke down slightly. I love and HAAAAATE the power music has over me.). I only have them around for when I want some quiet introspection.
Its not quite music but there is a chance that shuffle would end up landing on a bit of an audiobook, which would just be strange, or much better one of the episodes of Bleak Expecations I have. Since my current partner and I regularly listen to bleak expectations whilst making out it would not be particularly bad, laughter and whatnot is always fun.
But as for moodklls?
I mean seriously. Actually, just about most of radiohead would be bad. No offence to any radiohead fans but fuck me is a lot of there stuff miserable.
Cause yeah. That = Misery.
I don't as much have songs that would be hilariously bad if they came on. I just have songs that would be soul crushingly depressing for me. This is why I only put shuffle on playlists.
It really doesn't help that I just managed to lift myself clear of chronic depression lasting about 6 years so my music library is somewhat devoid of happy songs.
edit:
That would perhaps be the single worst song possible for sexytimes.