But there seems to be another category of YouTube content that is gaining momentum: 90-year-old grandmothers dancing.
At the top of this list is the grandmother dressed in red featured below. According to her Facebook page, she was born in 1921 and raised during the Great Depression, started dancing at age 7, and is legally blind. She might be the most popular on YouTube, but these other videos show she's got some stiff competition.
My 90-year-old Grandma Dances to LMFAO - Party Rock Anthem
Almost 93 year old great-great grandmother Dancing (Grandma)
90 year old dancer does splits
90 Year Old Mackie Dancing to Step It Up By Brittani Senser