Nikki Sixx is certainly one of the most active rock stars on Twitter, but he may have gone too far in his recent tweet attacking Sully Erna of Godsmack.

As we recently reported, on Jan. 29, Sixx posted, “We’re looking for an angry midget for our Vegas show’s and was thinking of using the singer from Godsmack.” Erna has had his beefs in the past with the Motley Crue bassist after an apparent unpleasant experience on the Crue Fest 2 tour. In fact, there are many who think the Godsmack song 'Cryin' Like a Bitch' is about Sixx, something Erna has pleaded the fifth on in the past.

Although Erna is no stranger to retaliation to such attacks, the Godsmack frontman has yet to respond to Sixx's latest tweet. We want to know what you think about the situation. Whose side you are on in this latest chapter of the feud between the two rockers? Let us know in the poll below.