4 20

[Justin Bieber]

Supposedly 420 was a code used by the San Rafael police department, however, the department has always denied this. A group known as the Waldos claim to have originated 420 in San Rafael in 1971. The group met every day at 4:20 PM after school and eventually began to use 420 as a code for marijuana so they could talk about pot in front of parents and teachers.

[Mark Zuckerberg]

Best holiday(which is today, april 20th)!