Zach Galifianakis has issued a public mea culpa to Bradley Cooper for calling him a hot idiot.

The comedian told Variety.com that he insults his Hangover castmate in the trailer of his new film, Between Two Ferns: The Movie, and felt bad about it even though he does it in character.

So Galifianakis felt obliged to call Cooper to say he was sorry.

I dont want to hurt people, but I do want to make them feel weird. Theres a fine line there, Galifianakis said.

The comedian admitted making the call was a little awkward.

I called him when I saw the trailer I was like, I called you a hot idiot, Galifianakis said.

Luckily, Cooper seemed OK with the diss.

[Cooper] just laughed. He doesnt care. Hes good-natured that way, Galifianakis said.

Cooper doesnt appear in the new film, which debuts Friday on Netflix , but Galifianakis isnt carrying it by himself.

The cast includes appearances by Matthew McConaughey, Jon Hamm, Chrissy Teigen, Keanu Reeves, Hailee Steinfeld, Tessa Thompson, Benedict Cumberbatch and Tiffany Haddish.

You can see Galifianakis explain how he apologized to Cooper in the video below: