[WATCH] Robert Pattinson ALS Ice Bucket Challenge! Does 'Twilight' Heartthrob Nominate Ex-Girlfriend Kristen Stewart Amid Zac Efron Bromance?

Earlier this week, "Neighbors" heartthrob Zac Efron completed the ALS Ice Bucket Challenge alongside "High School Musical" cutie, Ashley Tisdale:

Read more here: Zac Efron Accepts ALS Ice Bucket Challenge, Will Robert Pattinson Follow?

Fellow Hollywood hottie Robert Pattinson is a rather private person - even somewhat of a recluse. The 28-year-old British actor is not on social media, so several fans doubted that he'd actually respond to Efron's challenge.

Well - he did! In a very interesting and rather unconventional way.

R-Patz shared the viral video on YouTube, since he's not associated with Twitter, Instagram, etc.

"The Rover" star didn't have a bucket, so he improvised...

And no - he did not nominate on-and-off again "Twilight" girlfriend, Kristen Stewart. Instead, he called-out co-stars Guy Pearce, Mia Wasikowska and... Marilyn Manson?

Interesting...