What does "we are homosexual law" mean? How can a person be law?
"Homosexual law" here is not a phrase. The full sentence here should be "we are homosexual law partners". "Law partners" refers to the fact that they are both partners in law as they are both lawyers who are partners at their job. "Homosexual" here is just thrown in for humor to emphasize that they are both also homosexual, but it does not have any meaning when attached to "law partners".