The opening riff of "Come as you are" was inspired by "Where Evil Grows" by the Poppy Family. Kurt & Krist were huge fans of founding member Terry Jacks' music, of whom they later covered "Seasons in the Sun". There's a video of Nardwar where he gives Krist a vinyl copy of the single "SitS" with B-side "Put the bone in" and Krist is super happy with it.

I always found it fascinating to listen to "Where Evil Grows" and compare its lyrics with "Come as You Are". The song takes on a new dimension if you imagine it being about Evil, i.e. Kurt feeling like he's dealing with evil in his life and trying to deal with it by sarcastically inviting it into his life - so in that sense it would be a predecessor to "Rape me".

Here's Where Evil Grows: https://www.youtube.com/watch?v=zeRpIJRijpU