"Brooke M" is presumably Sheen's ex-wife Brook Mueller, the mother of Sheen's twin 6-year-old sons Bob and Max. Sheen divorced Mueller in 2011.
After a slew of similarly aggressive tweets, Sheen posted an open letter, slamming Richards with a string of incoherent and almost nonsensical paragraphs.
While Sheen went through and deleted all the tweets slamming his ex, his profanity-riddled "open letter to the media" is still available to read online. It could be considered NSFW due to the massive amount of curse words in the letter.
In it, Sheen shares poetic gems such as, "Denise Richards is a shake down piece of s**t doosh phace," and, "see u in court you evil terrorist sack of landfill rash." And those are the most tame comments from the "open letter."
Richards, however, has kept her responses classy and profanity free. She tweeted on Sunday, "Happy Dad's Day! @charliesheen have a great trip in Mexico! Kids were disappointed u weren't here for it- Hey we'll celebrate when u r back!"
Happy Dad's Day! @charliesheen have a great trip in Mexico! Kids were disappointed u weren't here for it- Hey we'll celebrate when u r back!