https://youtu.be/Z-WThgfvRdU?t=6m20s
Earlier this month at UFC 200, former UFC heavyweight champion Brock Lesnar made his successful return to the Octagon as he defeated Mark Hunt via unanimous decision, utilizing his wrestling to control the fight.
Following the fight, it was announced that Lesnar had failed an out-of-competition drug test back in June, and also failed a fight night drug test on July 9th, the night of UFC 200.
In the video above from 2008, you can see Lesnar storming out of an interview when his physique is mentioned.