Elon Musk is 'masterful' in how he fights back against short-sellers, Cramer says

"You can't lay a glove on him. He floats like a butterfly, stings like a bee," said CNBC's Jim Cramer, paraphrasing the famous quote from boxer Muhammad Ali. Tesla is one of the most shorted, or most bet-against, stocks on Wall Street. But Musk always seems to have their number, Cramer said.