Watch John Oliver's Takedown of 'America's Idiot Sea Cow' Ryan Lochte

"People are right to be angry here because Lochte's behavior wasn't just shitty and entitled, he's also ruined himself for us," host says

John Oliver looked back on the tarnished reputation of Ryan Lochte, "America's Idiot Sea Cow," on 'Last Week Tonight.'

Despite leaving Rio with a gold medal, Ryan Lochte emerged as the 2016 Summer Olympics' biggest loser after the swimmer fabricated a story about being robbed following a night out partying. On Last Week Tonight, John Oliver continued to pry into Lochtegate.

After creating the fake story about the robbery, Lochte proceeded to hightail it out of Brazil and get back to America, leaving the three other swimmers from that night back in Rio; police eventually questioned all three, exposing Lochte's lie. "While his teammates were detained by authorities, Lochte – the purest form of the chemical element Bro – was already back in America offering a bullshit apology," Oliver said.

Lochte eventually came clean about what actually happened that night, where he and the swimmers urinated outside a gas station and destroyed a soap dispenser before they were approached by security guards, who drew their firearms and demanded that the swimmers reimburse them for the damage they caused. However, America's opinion of Lochte has forever been tarnished.

"People are right to be angry here because Lochte's behavior wasn't just shitty and entitled, he's also ruined himself for us. Four years ago, he was America's favorite sweet, dumb merman," Oliver said. "The fact that Lochte is a total asshole is not remotely surprising; it's just that it makes him a lot less fun now. So as we say goodbye to the Rio Olympics, sadly, we must also say farewell to one of America's favorite idiots."

Last Week Tonight then shared a memoriam montage dedicated to Lochte, "America's Idiot Sea Cow," by highlighting the swimmer's more dimwitted moments.

Ryan Lochte has issued an apology for fabricated Rio robbery story. Watch here.