The actor reunites with his onscreen sister Drew Barrymore on her eponymous talk show.

Sean Astintook a trip down memory lane with50 First DatescostarDrew Barrymoreon the latest episode of her eponymous talk show.

“Peter wanted me to do a lisp,” recalled Astin, referencing directorPeter Segal.

The Drew Barrymore Show Drew Barrymore and Sean Astin

Sean Astin stops by ‘The Drew Barrymore Show’.Tyler Golden/The Drew Barrymore Show

“And I’m like, Yeah, I don’t think a lisp is right.

It just feels a little cheesy.

“Dad, Mongoose got in the trap again.”

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The film stars Barrymore as Lucy, an art teacher who has short-term memory loss from an accident.

He recalled having to put on some weight for the role after he already shed some pounds.

“That’s a line from the show.

I didn’t like that line, but that was a line from the show.

I lost like 30 pounds and was skinny and having so much fun.

And then Adam said, We’d love you to do this.

Can you put on 30 pounds?

I was like, ‘Oh my God, of course.’

They paid for a trainer and we were in the gym and lifting weights.”

“I was working on this series,” he said.

I was like, I’m tired.

I don’t wanna.

I read the script.

It’s a great script, but I don’t know what I’m doing in it.'

And she goes Do the audition.”

For more from Astin, tune into Monday’s episode of Barrymore’s show.