(FORTUNE Magazine) – We like Nancy Reagan's resonant solution to the drug problem: ''Just say no.'' But how about applying it more broadly? Holding aloft a beacon, here is a random selection of phenomena to which yours truly is saying no even as you | read these words: Socially responsible credit cards. These are bank credit cards issued to people ''who want to put their money where their morals are,'' as the American Banker primly put it. The idea is that every time you use the card, a donation is made to the Sierra Club, say, or Oxfam America. We promise to stop saying no when somebody produces a VISA card enabling you to donate to the contras. MDF Technology Inc. We frankly started saying no to this enterprise before we knew its name, which was not mentioned in that admiring Wall Street Journal piece on New York Governor Mario Cuomo the other day. It described Mario publicly giving the company a check for $4.5 million and soulfully dwelling on the workers who would now ''be able to work and go home having earned their own way.'' The deal turns out to be more complicated than indicated in the Journal, but the bottom line is that, as usual, Empire State politicians are pretending the jobs they're taking credit for have nothing to do with the horrendous taxes we pay (which you can read about in Politics & Policy). Tax exemption for reindeers. An instant turn-off. On page 79 of the 80-page summary of the new tax bill prepared recently by the Joint Committee on Taxation, it suddenly turns out that all those characters who came out of the conference committee talking about simplification, loophole closing, and exemption elimination had ensured that none of this applied to a certain tundra-based ethnic group, which will continue not to be taxed on ''income derived directly from the sale of reindeer or reindeer products.'' Congressman William D. Ford of Michigan, who has a 100% approval rating from the AFL-CIO, and who is principal author of the Labor-Management Notification and Consultation Act of 1985, which came within five votes of passage; some version of this exceedingly dopey legislation is guaranteed to be reintroduced one of these days. Its main point is to prevent companies from closing down money-losing plants. The Better World Society. This is the outfit whose board of directors is headed by Ted Turner and includes Jimmy Carter of the U.S. and Georgi Arbatov of the U.S.S.R. At a recent gala at the Waldorf, the society gave awards to folks alleged to be working for the environment and peace, one recipient being Parliamentarians Global Action, which says it influenced Mikhail Gorbachev to suspend nuclear testing, which is now urging the U.S. to follow suit, and which naturally got an award from Yoko Ono. No and no again.