Buried in an ESPN article about Harbaugh breaking his leg as a child is this classic passage:
Linebackers coach Chris Partridge, who was on the trip to Iowa with Harbaugh, warned them that blasting McGivern's phone number out to all of Harbaugh's 1.32 million followers might be a bad idea for the insurance office's phone lines. McGivern has been in the business for 40 years though. He said he knew better than to expect a deluge.
To date, he's received a grand total of five calls from people that saw the tweet -- three reporters, one guy who actually wanted an insurance quote and another who called within minutes (McGivern's office line forwards calls to his cell phone) and just wanted to talk to Harbaugh. The coach graciously took the phone and talked for a couple minutes before the caller asked about the end of this past fall's Ohio State game. The call was promptly disconnected.
I'll assume the caller's last words were "Shit happens bum juice."