When Baldwin's Trump asks them if there is space for him to sit at the table, Trudeau lies and says that there is not.
Almost one week ago, Trudeau was seen standing in a huddle with Macron, Johnson, Dutch Prime Minister Mark Rutte and Princess Anne, daughter of Queen Elizabeth, at a Buckingham Palace reception for leaders at the North Atlantic Treaty Organisation summit, joking about Trump's long, impromptu press conferences.
Set in a high school cafeteria, the sketch pokes fun at Trump's various disputes with foreign leaders over the course of the summit in London.
The sketch has the Trudeau character mocking Trump's appearance and intelligence, while the Macron character tells the others to wave to Trump at the other table, "so he thinks we like him".
Britain's Princess Anne The Princess Royal, right, talks to North Atlantic Treaty Organisation delegates from left, Canadian Prime Minister Justin Trudeau and Britain's Prime Minister Boris Johnson, during a reception at Buckingham Palace, in London, as North Atlantic Treaty Organisation leaders attend to mark 70 years of the alliance, December 3, 2019.
John Whittingdale defends Boris Johnson for avoiding Andrew Neil interview
The Labour Party has complained to the BBC's director general, accusing the broadcaster of "slanted and biased" election coverage. However he vowed to the DUP, his unionist allies in Northern Eire, that there would by no means be a border down the Irish Sea.
They also put a note on Trump's back that read "Impeach Me!"
"Don't make this harder than it already is", Johnson replies awkwardly. "I'm hanging out with these guys now".
"I heard you can't get impeached if your hand is bigger than your face", Trudeau says, smacking Trump's hand into his own face when he falls for the age-old gag.
The sketch was based on the viral video clip from Tuesday which showed Trudeau, Macron and Johnson at the Buckingham Palace NATO reception appearing to gossip about Trump and the length of his impromptu press conferences.
The real Trump has seemed to shrug off the recording, calling Trudeau "two-faced", but also overall a good guy.
When Alec Baldwin's President Trump entered the room, looking for a place to eat his four hamburgers, the trio pointed him in the direction of... nerdy Latvia.