NOFX (official meaning): Band member Eric Melvin came up with the name NO-FX after listening to straigth edge band Negative FX's one studio album. The band leader Fat Mike agreed on the name and later dropped the hyphen.
But while surfing the web, I've found a most more descriptive definition of NOFX.
What’s wrong with it? Promotion of homosexuality, illicit drug use, sinful BDSM sex, anarchy, murder of politicians, lesbianism, promiscuousness, hedonism, abortion, euthanasia, sloth, atheism, crippled rights, bedroom “water sports”, blasphemy. Criticism of right-wing politics, George Bush, religion, the NRA, the American Heartland. They call for armed anarchic revolution, incite people to lynch the KKK and call into question the ethics of beloved American corporations.
Source: https://pop-verse.com/2014/08/27/the-fat-mike-enigma-nofx-a-newsletter-from-a-punk-scene-ombudsman/

Fat Mike of NoFX dressed as usual
But while surfing the web, I've found a most more descriptive definition of NOFX.
What’s wrong with it? Promotion of homosexuality, illicit drug use, sinful BDSM sex, anarchy, murder of politicians, lesbianism, promiscuousness, hedonism, abortion, euthanasia, sloth, atheism, crippled rights, bedroom “water sports”, blasphemy. Criticism of right-wing politics, George Bush, religion, the NRA, the American Heartland. They call for armed anarchic revolution, incite people to lynch the KKK and call into question the ethics of beloved American corporations.
Source: https://pop-verse.com/2014/08/27/the-fat-mike-enigma-nofx-a-newsletter-from-a-punk-scene-ombudsman/