It is fair enough to say that country singer Miranda Lambert is not a fan of Chris Brown. Lambert stepped up her feud with Chris Brown by taking aim at the R&B singer again during her show in Massachusetts.

Lambert also took to "Twitter" her expression of outrage at Brown's performances at the Grammy Awards on the third anniversary of his infamous fight with ex-girlfriend Rihanna.

The defiant Brown, who picked up a "Best R&B Album" Grammy Award, turned on Lambert and others also on "Twitter."

"Hate all you want because I got a Grammy now! That's the ultimate f**k off! I'm back so watch my back as I walk away from all this negativity," Brown wrote.

Lambert hit back by telling her followers that she also has a Grammy and she used her concert at the University of Massachusetts to take aim at Brown once again.

According to E!Online, before singing her track "Gunpowder and Lead" which is about a woman preparing to kill her abusive husband, she pulled out a poster with handwritten letters reading "Take Notes Chris Brown."

"Get a good picture now, put it on Twitter. I've been in a world of hurt with Chris Brown fans lately. But see, I just have to speak my mind because where I come from, beating up on a woman is never okay," Lambert told the crowd.

"So that's why my daddy taught me early on in life how to use a shotgun," the country singer added after the crowd applauded and cheered on.

Many of Lambert's songs like "White Liar" and "I Wanna Die" are known to bash men. Lambert has yet to respond to Brown's "Twitter" messages. On the other hand, Jack Osbourne, Michelle Branch and Eric Stonestreet have also expressed their disappointment in Brown's Grammy acceptance.

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