The bad blood between the groups date back to their early days when Motley Crue were the kings of the glam scene on the Sunset Strip in Hollywood and Metallica were one of the pioneers of the thrash metal scene but were forced to relocated to the San Francisco Bay Area from Los Angeles to find a more receptive audience.

One of the most notable exchanges in feud included Ulrich accusing the Crue of using a backing tape during their appearance on the 1997 American Music Awards which caused Nikki Sixx to respond, "Dear, Sweet, Fat, Balding Larz (love the make up babe!). Taking your ever moronic soapbox position on a subject that's NONE of your f***ing business has made you to be an a**hole as usual.

"Considering that me and Tommy know that your live tapes have been re-recorded, And ALL your instruments were repaired in Pro Tools (and had the balls to lie to your fans and call it a 'live' album)...People in glass houses should NOT throw rocks!!! considering you decided to take your bullsh*t to the press, we feel its only fair to return the punch!! You are such a poseur and thanks for releasing that 'load' of sh*t CD of yours...you made more room for us."

Now, Tommy Lee has poked fun at Lars' drumming ability by posting a photo on Twitter that was created by a N.W.A biopic Straight Outta Compton meme generator that that shows the words "Straight Outta Tempo" over a photo of Ulrich. See his post below:

pic.twitter.com/bnIGW91At7

— T❍mmy L33 (@MrTommyLand) September 20, 2015