Look, Conan O'Brien is back on "The Tonight Show"!

Three late-night hosts -- Stephen Colbert, Jimmy Fallon, and Conan O'Brien -- put aside ratings rivalries for a joint sketch that broadcast on both "The Late Show" and "The Tonight Show." (Conan's show is on hiatus this week; no idea where Jimmy Kimmel was in all of this.)

It appears to have been the first time one sketch served as the cold open to two late night shows. Because crossovers aren't just for superheroes anymore!

The sketch had the hosts video conference each other. Of course, the topic was President Donald Trump and the recent insults he's given both Fallon and Colbert.

Fallon: "I heard he said we're all no-talent, lowlife lost souls."

Colbert: "Well that doesn't sound right. That's Conan..."

So they called up Conan, who was busy shaving -- and had no idea Trump was president. "The real estate guy who sells steaks?!" He suggested they give Trump time and be civil.

O'Brien: "If we're not careful, this thing could start to get ugly."

Heh. The sketch ended with Colbert and Fallon deciding to go out to eat at Red Hen, a reference to the Virginia restaurant that recently asked White House Press Secretary Sarah Huckabee Sanders to leave.

Jimmy Kimmel has definitely taken his fair share of shots to and from POTUS, so he should explain why he didn't join in for this bit.

After this, the hosts should team up more often -- maybe they can even become the new Avengers in Phase 4.

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