PF

Ok ok, this may sound gross, but I'm a little worried. D:

I just got done pooping (oh shussh, everyone does it) and there were black bubble things floating on the top of the toilet bowl. It looked like oil or something. Does anyone know what this is? I'm scared it might be like... cancer or something. T__T

That's wierd. I would discuss it with the doctor. I know if it were blood and it was black, the problem is further up in the digestive tract. They may make you have a fecal smear.

It could be sinus drainage. The stomach can not break the sinus drainage down so it comes out gross. Just to be sure, you might call your family doctor.