Donald Trump has taken his rivalry with Lindsey Graham to new levels when he read off the South Carolina senator's phone number in public.
The 69-year-old Republican presidential hopeful gave out the number at a campaign event in Graham's home state right after calling him "a total lightweight" and "idiot," Us Magazine reported.
Trump, who proceeded to read the number out loud twice, said he wasn't sure if the number was still in service since several years had passed since he'd gotten it, but added "I don't know, give it a shot."
Graham earlier insulted his rival by calling him "a jackass," referring to the recent controversy over Trump's comments regarding John McCain's military service.
After Trump's event, Graham took it to his Twitter page to write "Probably getting a new phone.