File this one under: Stupid Crazy People.
The Giants said NFL Security is looking into the matter, according to Newsday. The league had no comment.
"You're always concerned about the player and his family," Coughlin said Tuesday, via Newsday. "For young people to have to worry about things like that, it's not necessary, it's not a part of what we do. I'm not going to speculate on social media. I'm just concerned about however this would be revealed that it's wrong and it has no business in our game."
The Twitter user -- posting under the name Andre Rayner with the handle @DMMeBoo -- later sent messages apologizing to Jacobs while also attempting to play off his earlier tweets as a joke. Jacobs didn't respond, according to Newsday.
The user has since deactivated the account. That's probably a good idea.