The pair are commentating on a pay-per-view fight between 58-year-old Evander Holyfield and ex-UFC star Vitor Belfort tonight (Saturday 11 September), with Trump Jr. dubiously billing it as 'the biggest fight of the year'.
Taking to Twitter, he wrote: "The biggest fight of the year this Saturday. My Dad - President Trump- & I, are commentating and we're going to have some fun.
"I'll finally [sic] pushing him on the burning question. Are aliens real and what's up with Area 51!
"Shoot me some other questions here!"
Well, people certainly did shoot him some questions - but probably not any he'd be happy to ask his pops.
One person asked: "Is he going to advise the dude who gets knocked out to call the fight rigged?"
Another suggested: "I have a question for your Dad, Why doesn't he own up to the fact that he lost to Joe Biden?"
A third added: "Will he attempt to rewrite history and tell us all about his bravery on 9/11 before or during the fight?"
Indeed, the majority of the critical questions levelled at the Trumps revolved around their decision to spend the 20th anniversary of 9/11 co-commentating on a boxing match.
Across the US - and the world - people will pay tribute to the 2,977 people who lost their lives in the 11 September attacks, at memorials and vigils.
As such, many people find the plans of the former POTUS shocking, and he has been widely condemned.
Replying to Trump Jr.'s tweet, one person said: "How is this event in any way appropriate on the 20th anniversary of 9/11?"
Another added: "I think since it's the 20th anniversary of 911 I'm going to go to chapel instead and pray for our country."
A third said: "This Saturday is the 20th anniversary of 911. We will be going to 911 events, couldn't care less about a boxing match."
Captain America actor Chris Evans also criticised Trump's plans for the anniversary.
On the 20th anniversary of one of the darkest days in American history, a former president of the United States of America will be.....hosting a pay-per-view boxing match in Florida.- Chris Evans (@ChrisEvans) September 9, 2021
Honestly, how, HOW do the people who support him square this? https://t.co/rCJ48AvKDB
He tweeted: "On the 20th anniversary of one of the darkest days in American history, a former president of the United States of America will be.....hosting a pay-per-view boxing match in Florida.
"Honestly, how, HOW do the people who support him square this?"
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