He then lashed out at Carusone's efforts thus far, which also included a protest in front of Macy's, adding: "Dummy @GoAngelo who had 11 people show up for 15 min. at his 'massive' rally at Macy's is trying to get publicity for self by using me."

It probably didn't help the TV star's cause that Angelo's attorney sent his own letter to Trump's lawyer saying Carusone's boycott efforts are protected by free speech, and noting he's yet to get any specifics from The Donald's side over how he's been harmed financially.

For Carusone, who decided to go after Trump after being fed up with the Birther conspiracy theories the latter pushed during the presidential campaign, Trump's concession is tantamount to victory.

"Trump admits defeat. But alas, this is 'still' about @macys," he commented after getting Trump's tweet about the lawsuit not working.