>>3396361he got sent to a religious anti-gay camp by his dad in one episode because his dad walked in on cartman about to put his penis into butters' mouth (without butters realizing, because he was blindfolded), so his father assumed he was "bicurious" and sent him to a conversion therapy camp.
tweek and craig (although i can see how you'd confuse him with clyde; their voices are pretty similar and so are their names) weren't gay until like, over ten years after that episode came out.
on a related note, butters gets paired up with a roommate who is actually gay, and eventually says that he "likes" butters (although butters, of course, doesn't even know what being bicurious is, and has no idea that when he says he "likes" him he actually means in a gay sense). it's too bad he never appeared in the show again because they're really cute together.
fuck i'm autistic about this show