It is plausible. Especially so, since this joke has more than a little truth to it:A man had three beautiful girlfriends but didn’t know which one to marry. As a test, he decided to give each woman $5,000 to see how they would spend it. She said, “I bought these gifts for you because I love you so much. The third woman took the $5,000 and invested it in the stock market, doubled her investment, returned $5,000 to the man and reinvested the rest.