Donald Trump might have oodles of cash — and, probably, the GOP presidential nomination — but there’s one thing the mogul-turned-pol lacks: a sarcasm radar.

On Friday, piano man Billy Joel dedicated the song “The Entertainer” to Trump during his concert at Madison Square Garden, claiming that The Donald’s campaign has kept the singer very entertained over the past few months.

Many in the packed crowd sensed a dig behind the dedication.

But one person apparently wasn’t in on the Donald diss. And that would be Donald Trump himself.

Trump accepted Joel’s comment as a compliment and thanked the musician for his kind words, tweeting praise back in return.

Joel has dedicated “The Entertainer,” a song about the price of staying on top, to Trump before, although he wouldn’t confirm or deny the speculation that he was ragging on Trump.

“I’m in the entertainment business. Donald Trump’s campaign has been very entertaining,” Joel said, according to Time. “Aside from that, who cares about the political opinions of a piano player?”