“He couldn’t look at Nathan without giggling,” says fellow cast member Amy Ryan.

“He seems very upbeat.

“Yet, underneath it, there’s something sinister at play.

Joaquin Phoenix in ‘Beau Is Afraid’

Joaquin Phoenix in ‘Beau Is Afraid’.Takashi Seida/A24

Things are not what they appear to be.”

One thing that could break the tension and always put a smile on Phoenix’s face?

The sight of Nathan Lane!

Nathan Lane, Joaquin Phoenix, Amy Ryan Beau Is Afraid

Nathan Lane, Joaquin Phoenix, and Amy Ryan in ‘Beau Is Afraid’.Takashi Seida/A24

“He couldn’t look at Nathan without laughing,” says Ryan of theJokerOscar winner.

“And I don’t mean giggling, I mean hysterically laughing.

I thought, oh my God, we’re never going to get this scene done.

Nathan Lane Beau Is Afraid

Nathan Lane in ‘Beau Is Afraid’.Takashi Seida/A24

But, in some inhumane nanosecond, it drops away, and he is in that character.

Lane and Ryan saw the finished, three hour-long film together.

“Nathan came into the screening with a giant thing of iced coffee,” says Ryan.

“My first impression was like, ‘Oh no, you’re going to miss part of the film!

There’s a long way [to go] to have that big an iced coffee!’

It made me dizzy.

It kind of stunned me.”

“I loved it,” says Lane.

“I don’t know whatotherpeople will make of it.

Look, this is for serious moviegoers.

You’re getting, really, a man’s entire life.

The cast ofBeau Is Afraidalso includes Parker Posey, Richard Kind, Zoe Lister-Jones, and Stephen McKinley Henderson.

The A24 film opens in New York and Los Angeles on April 14 and nationwide on April 21.

Watch the trailer forBeau Is Afraidbelow.

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