Bill and Ted may be pushing close to that half-century mark but, according to Keanu Reeves, there may be one “excellent adventure” left in them.

While promoting his current film “John Wick: Chapter 2,” Reeves stopped by Britain’s “The Graham Norton Show,” where he teased a talked-about plot for “Bill & Ted 3.”

“‘Bill & Ted: Still Alive,'” the actor joked. “It would be Bill and Ted in their 50s. I mean, that just makes me laugh, right there.”

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“There’s a cool story. Basically, they’re supposed to write a song to save the world and they haven’t done that yet,” Reeves said. “So the pressure of having to save the world — their marriages are falling apart, their kids are kind of mad at them. But then someone comes from the future and tells them if they don’t write the song it’s just not the world, it’s the universe. So they have to save the universe because time is breaking apart. So then elements of the past come in.”

Whoopi Goldberg, who was also guesting on the talk show, cracked up at the idea and jumped into the conversation. “I must be that person. I have to be the person from the future. I have to be!”

Reeves had no problem with that, saying, “You’re in it!”

To quote Ted, “Excellent!”

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The original movie, “Bill & Ted’s Excellent Adventure” was a 1989 sci-fi comedy buddy film turned cult classic starring Reeves and Alex Winter as two slackers who travel through time to gather historical data for a high school project.

The sequel, “Bill & Ted’s Bogus Journey,” was released two years later. A live-action TV series, as well as an animated series followed, along with a comic book and video games.

Watch out the clip of Reeves’ interview on “The Graham Norton Show” above.