Just two weeks after beefing with a journalist at Spin, sensitive rapper Lupe Fiasco is again involved in Twitter related drama, although this time the Chicago rapper is threatening to retire.

The most recent spat involves Chicago rap prodigy Chief Keef, about whom Lupe recently issued some critical statements. "Chief Keef scares me. Not him specifically, but just the culture that he represents,"Lupe said in an interview with Baltimore hip-hop station 92Q. "Specifically in Chicago. And I don’t speak this about any other city because I’m not from there. But like my family lives in Chicago. So my nephews, my cousins, my friends, and my peoples they all in those hoods that he represents. When you drive through Chicago…The hoodlums, the gangsters, and the ones you see killing each other. And the murder rate in Chicago is skyrocketing and you see who’s doing it and perpetrating it, they all look like Chief Keef."

Needless to say, Chief Keef wasn't amused. The young rapper tweeted:

Fifteen minutes later, Lupe responded directly to Chief Keef:

He followed those with some vague, seemingly related Tweets:

He then got more specific, and began hinting at retirement.

And he ended his Tweet rant with this, which seems like a explicit retirement announcement.

So is this really the end of Lupe? Did "scary looking" Chief Keef push him over the edge? Or was this part of Lupe's earlier plan to quit rapping and start teaching? Hard to say.

The third, more cynical option is this: all these recent Twitter freak-outs are part of Lupe's plan to hype his forthcoming album, Food & Liquor 2: The Great American Rap Album Pt. 1, which is set to be released on September 25th.