CORVALLIS, Ore. - The formula remains the same: a lone figure dancing wildly as others go on about their business.
Then the bass drops, and all shake cuts loose.
That's the formula behind the viral Internet meme the "Harlem Shake," which pairs a DJ's beats with some simple - and fun - video production.
This one's different, however.
The lone figure isn't wearing a helmet, he's in a wheelchair.
And the crazy crew who pop to life after the jump cut were mostly born before the Internet.
The residents of Stoneybrook Assisted Living Center in Corvallis have joined the phenomenon, contributing their take on the "Harlem Shake" to YouTube.
"You're kind of restricted in a wheelchair, so I was just flailing around my arms," said Ethel Norgar, who took part in the film.
Participation was key, even if some he joined the fun weren't familiar with the concept.
"The Harlem Shake? Did I do the Harlem Shake?" asked David Truog. "Oh, haha - is that what you call it? Yeah, that was a lot of fun."
The activity gave residents an opportunity to meet their neighbors and interact.
"These are crazier people than what I thought," said Joe Harrod.
And staff at Stoneybrook said activities like this - the crews has also participated in a flash mob - help the residents connect with younger family members.
"When we post things on YouTube or Facebook, we have phone calls all day long from their family members saying 'oh my gosh Mom, I saw you on the Internet' or 'Oh my gosh grandma, I say you dancing on the Internet," said activities coordinator Stephanie Deatherage, "and they're like 'yeah we can do that too.'
"It's just awesome to get them to be able to do things they thought they would never be able to do again," she added.
Ray Wallace, the dancer at the opening of the video, took that inspiration to heart.
"Got to get out of that wheelchair," he said, shadow boxing with his fists, "and start living my life."