Steve Martin is the latest celebrity to tweet, then delete.
On Friday night, the actor tweeted to his followers that they should "submit your grammar here." When one user asked, "Is this how you spell lasonia?" Martin responded, "It depends. Are you in an African-American neighborhood or at an Italian restaurant?"
He quickly deleted the offensive tweet, and later tweeted: "I did apologize. But again, a second later I realized what an offensive thing I'd done. Deep bow."
Martin also acknowledged the tweet was "highly inappropriate."