The ex-couple, who announced in September they were splitting up after nine years of marriage, reunited in New York City on Christmas Eve to spend the holidays with their two sons: Archie, 4, and Abel, 2.
The duo were spotted hopping on the subway with their kids (bonus points for keeping it real with the ride!).
As they waited by an elevator, the ex-couple smiled while they chatted, keeping bundled up against the cold.
Their sons, meanwhile, seem to have inherited their parents' comic flair, as they flashed some hilarious facial expressions while watching the subway hustle and bustle.
Despite calling it quits, Arnett and Poehler have remained friendly: Just a week after announcing they'd hit splitsville, Arnett was seen attending Poehler's 41st birthday party.
Christmas...birthdays...these exes clearly know how to keep those special occasions special for their kids.