Donald Trump reacts after son Donald Trump Jr. does odd impression of him during speech at Charlie Kirk memorial

It seemingly takes a lot to leave US President Donald Trump speechless, yet he was seen stunned at an impression that his son Donald Jr had of him during Charlie Kirk's memorial service on Sunday.

The 70,000 seater State Farm Stadium was packed full during far-right commentator Charlie Kirk's funeral service on Sunday, with another 20,000 onlookers showing their support in overflow venues nearby.

The memorial service came after 31-year-old Kirk was shot during an event at Utah Valley University earlier on in the month, and police have now officially arrested and charged the individual they suspect to have killed the political influencer.

Anyone wanting to tune into the Turning Point USA co-founder's service could also do so through a number of live streams, with a long list of notable names including Erika Kirk and President Donald Trump set to speak.

While many people's eyes were drawn to the secret conversation that happened between Trump and Elon Musk, with lip readers offering their expert analysis of what was said, another moment during a speech has also caught the attention of some, as per UNILAD.

As shared by Fraser Jackson on X, there was a point during Donald Trump Jr.'s memorial speech where he seemed to perform an odd impression of his father, and the cameras managed to capture the reaction of the current president.

Donald Jr., a close friend to Kirk, remarked: "I'm not widely known for being a sentimental guy. Anyone who's seen me on social media knows I'm far more likely to crack a joke or get myself in trouble for posting some grossly inappropriate memes than I am to shed a tear.

"I know this because I've even got a call from that guy a couple of times," he said while pointing up towards President Trump in the crowd, before beginning his impersonation.

"You know Don, Don, you're getting a little aggressive on social media Don, relax," he joked in his father's recognizable tone alongside his signature hand gestures.

Trump could be seen smiling, perhaps embarassingly, and shaking his head in response to the impersonation, but he also offered a wave and even a thumbs up in approval, showing that it was played off well.

Donald Jr. is certainly far from the only person that has offered up an impression of the president, as he is seemingly so easy to copy, but usually it's from the other side of the political spectrum and used to mock instead of an otherwise harmless joke here.