Donald Trump says he spoke with his fat friend after he used a story about him buying a weight loss medicine overseas at a discounted rate as an antidote at his announcement on bringing down prescription drug prices.

The president is still keeping the identity of this businessman on the 'fat shot drug' concealed, but told Fox host Sean Hannity that his friend 'knows exactly who I was talking about.'

The 'neurotic' friend and Trump spoke on the phone after the Monday announcement on lowering the price of pharmaceuticals for Americans.

Trump said his rich counterpart thought it was 'interesting' that he shared the story of how his weight loss drug was significantly cheaper to buy in London versus in New York.

'I'm just glad I didn't use his name,' Trump told Hannity during an interview aboard Air Force One en route to the Middle East. 'He's actually a very rich guy, he's a very successful guy. He's very happy, he knows exactly who I was talking about.'