I blacklisted "cock_transformation" but whenever i look up transformation i still get posts with that tag! I went into my settings and i am 100 percent sure that it saved that into the blacklist! Please help.

Check to make sure you have it on a single line, otherwise it won't always blacklist the tag. An example of how it should look is
cock_transformation
At the left-hand side, with nothing afterwards.

If you want, you could C&P your blacklist so we could see if it should work.

Justarandomalt said:
I blacklisted "cock_transformation" but whenever i look up transformation i still get posts with that tag! I went into my settings and i am 100 percent sure that it saved that into the blacklist! Please help.

The most common mistake people make when creating a blacklist is to put all of their blacklisted tags on the same line.

Check to make sure each tag you want to blacklist is on a separate line.

Edit: Here's a concrete example of how to format a blacklist with multiple tags.