I bet you had know idea that your grandmother was one of the pioneers of hip-hop, did you? Grandmothers on Facebook are accidently tagging themselves as Grandmaster Flash and the phenomenon has given birth to a tumblr dedicated to the adorable mistake called  "Love, Grampa and Grandmaster Flash." 

It's only a matter of time before she sends you $5 in a birthday card and signs it "Love, the Furious Five."

1.

undefined

2.

undefined

3.

undefined

 

4.

 

undefined

5.

 

undefined

6.

 

undefined

7.

 

undefined

8.

 

undefined