“I HOPE @UFC DRUG TESTING IS IN EFFECT by then ;),” Nelson tweeted.
Never one to back down from a good battle, Barnett was quick to return fire.
“I’m hoping they allow you to do steroids just make this a competitive fight. Gravy injections haven’t worked for you,” Barnett countered.
Of course, Barnett is one of the biggest cheaters in MMA history. In the veteran’s first UFC stint, he flunked two straight drug tests for banned substances. On the second occasion, Barnett was stripped of the heavyweight title after beating Randy Couture at UFC 36.
Barnett then single-handedly brought down Affliction Entertainment after flunking his pre-fight drug test for anabolic steroids.