Some of MMA's biggest stars took to Twitter to react to Anderson Silva and Nick Diaz failing drug tests. Silva failed his pre-fight drug test for two performance-enhancing drugs, while Diaz failed his post-fight test for marijuana metabolites.

Sad that Anderson silva tested positive for steroids. Although in hindsight, I'm not surprised. I'm too naive. #any1notcheatingbesidesme — michael (@bisping) February 4, 2015

WoW! @ufc has a lot of explaining to do. #SAD day in the ufc world. Crazy how Dana can control if they fight or not.The mighty dollar! LOL — Tito Ortiz (@titoortiz) February 4, 2015

All is lost. I’m gonna go jump off a fu king bridge. ANDERSON SILVA DOES NOT USE PEDs! — Marcelino Evil (@KCBanditMMA) February 4, 2015

In other news, Fedor is still the #GOAT — Marcelino Evil (@KCBanditMMA) February 4, 2015

Only thing I am testing positive for is Pasta or Cheese. — Joe Lauzon (@JoeLauzon) February 4, 2015

Fucking lame. Can't look up to anyone these days. Fuck you silva and Diaz. Fuck man. — Cody Bollinger (@CodyBollinger) February 4, 2015

Positively not taking shit. Everyone testing +. #fightclean — Scott jorgensen (@Scottjorgensen) February 4, 2015

We're Silva's test results known by the commission and UFC before the fight? If so, why was he allowed to compete? — TJ Grant (@TJ_Grant) February 4, 2015

What's the point of doing pre fight testing (as in 1/9) if you don't get the results back until after the fight? Rush that shit to the lab — Cody Gibson (@TheRenegade559) February 4, 2015

FUCKING SERIOUSLY is everyone on the fucking sauce? — Tom Lawlor (@FilthyTomLawlor) February 4, 2015

I can't wait until we can just focus on MMA without all the extra drug test failures, etc — Derek Brunson (@DerekBrunson) February 4, 2015

Why the fuck did Anderson get to fight? It's a seriously dangerous sport that could cause serious trauma #DontBeScaredHomie — Ramsey Nijem (@RamseyNijem) February 4, 2015

Man....... When is everyone gonna learn? #YourPissWontLieForYou — Ricardo Lamas (@RicardoLamasMMA) February 4, 2015

Spiderbolics — C H I T O V E R A (@chitoveraMMA) February 4, 2015

[Gets on Twitter to have some fun] [Sees torches and pitchforks] [Quickly logs off Twitter] — Stipe Miocic (@stipemiocicufc) February 4, 2015

Someone once told me "If you're in the top 10 in UFC you're on something!" Looks more and more true with every major fight. Sad to hear. — Anthony Birchak (@abirchakMMA) February 4, 2015

http://t.co/2B1kSqXXyL this can't be true — jimi manuwa (@POSTERBOYJM) February 4, 2015

More disappointment in #mma — Kenny Florian (@kennyflorian) February 4, 2015

All fighters should follow the rules if they wanna be a pro-fighter but #PED's = way worse than prescribed or recreational marijuana use. — Kenny Florian (@kennyflorian) February 4, 2015

Wow just found out how to be the GOAT & get paid @ufc that why he likes Nike just do it! Lol it's funny http://t.co/1sqQHdrQWF — Roy Nelson (@roynelsonmma) February 4, 2015

Maybe since @nickdiaz209 will be suspended at length he would be open to coming to Asia and fighting under real MMA rules. @ONEFCMMA — Ben Askren (@Benaskren) February 4, 2015

A guy has super miraculous recovery from an injury and people are surprised that he had steroids in his system? — ike vallie-flagg (@IKEVF) February 4, 2015