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NEW YORK ( TheStreet) -- Investors looking to turn a quick profit on Abercrombie & Fitch ( ANF) takeover rumors, beware. Jim Cramer told Lindsey Bell at TheStreet.com Thursday that investors need to stick with their discipline and never speculate on a takeover when the fundamentals are declining. Cramer reminded investors that shares of Best Buy ( BBY) popped on its rumored buyout, only to decline since then. He said sticking with your investing discipline may sometimes limit your upside, but that's the price you pay to protect yourself from the downside. Cramer said he's not a fan of any teen apparel companies because those are among the toughest customers to have. Watch the full Cramer interview