Acclaimed “Piano Man” Billy Joel described Donald Trump’s presidential campaign as “very entertaining” on Saturday, after dedicating a song to the presumptive Republican nominee at his Madison Square Garden concert in New York on Friday. Trump immediately accepted the shoutout as a compliment, while others quickly speculated Joel might have meant it as a joke. “Thank you @BillyJoel many friends just told me you gave a very kind shoutout at MSG,” Trump posted on Twitter on Friday.