London Mayor Sadiq Khan on Saturday made a dig at President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE and his social media habits, referring to him as the "6-foot-3 child in the White House.”

The U.K. politician was speaking to a room of teachers at an education event at Westminster's Central Hall when he joked that he made sure to turn his phone off, The Independent reported.

“For those of you that have your phones on, if somebody starts tweeting about me — a 6-foot-3 child in the White House — can you let me know?” the mayor asked as the room reportedly erupted into cheers and applause.

ADVERTISEMENT

Khan and Trump have had a long-running feud that reached new heights when the U.S. president visited the United Kingdom earlier this month.

Khan wrote a fiery op-ed before Trump’s arrival arguing that the United Kingdom was on the “wrong side of history.”

“In years to come, I suspect this state visit will be one we look back on with profound regret and acknowledge that we were on the wrong side of history,” Khan said in The Guardian.

Trump fired back by calling Khan a “stone cold loser” who was being “foolishly ‘nasty’” to him.

Khan retaliated by calling Trump the “poster boy for the far-right movement around the world” as thousands gathered in London to protest Trump’s state visit.