This trended Sept. 2, 2010 because...
The Peach Pit was a popular hang out for the characters on the American show "Beverly Hills 90210" that originally aired in the 1990s. People are discussing it because Sept. 2 can be written and read as 9/02/10.
Related links
Twitter Search for Peach Pit
History
First seen
Sept. 2, 2010