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We wouldn't fault Denise Richards for sitting back, laughing and telling the world "I told you so!" over the recent arrest of her ex, Charlie Sheen, but apparently some "negative nellies" are criticizing her for what they thought was taking advantage of his bad situation!

Soon after Charlie's arrest, Denise was photographed looking happy and smiling with her two adorable girls, which many people thought was an opportunistic photo op! "for all the negative nellies out there, I DID not have a f..ing photo op with my kids at a park when there is drama u get followed more," Denise tweeted.

But she didn't stop there! Minutes later she tweeted, "sorry had to vent s*** pisses me off sometimes..one day..I will spill my guts about EVERYTHING."

Everything, huh? We bet she's got a big vault!