Former New York Mayor, and current candidate for president, Michael Bloomberg, has fired back at President Donald Trump’s tweeter jabs at his short stature.

Bloomberg’s campaign spokesperson, Julia Woods, accused President Trump of spreading false information about the former New York City mayor wanting to stand on a box at the Democratic debate to make him appear taller.

Wood mocked Trump’s own appearance in a fiery statement Sunday while denying the claim.

“The president is lying. He is a pathological liar who lies about everything: his fake hair, his obesity, and his spray-on tan,” she told CNN.

Since Bloomberg got into the race, Trump has made several claims about his height. Most recently, Trump told Fox News’s Sean Hannity in an interview that aired on Sunday before the Super Bowl, “Now he wants a box for the debates to stand on. OK. It’s OK. There’s nothing wrong. You can be short. Why should he get a box to stand on? He wants a box for the debates. Why should he be entitled to that? Really. Does that mean everyone else gets a box?”

Earlier that same day, Trump called his potential 2020 Democratic opponent “mini” while alleging again that Bloomberg wanted to stand on a box. Bloomberg, 77, is reportedly 5 feet, 8 inches tall, about half a foot shorter than Trump.

It’s not unusual for candidates to stand on raised platforms behind their lecterns on the debate stage to make all the candidates appear closer to the same height.