WATCH: Michael Phelps Takes Over ‘Tonight Show’ & New Hashtags

Michael Phelps Gets a Life-Size Cutout of His Angry Olympic FaceMichael Phelps explains how his angry face during the Rio Olympics became a meme, breaks down what Rio was really like despite Brazil backlash and Jimmy imitates his famous pre-race backslapping. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow…2016-09-02T11:00:02.000Z

Remember #PhelpsFace? Jimmy Fallon did and he reminded Michael Phelps all about when the most-decorated Olympian of all time stopped by The Tonight Show.

Phelps said that as he was making the face, he realized he was on camera and that it would be everywhere the next day. Fallon then presented him with a life-size cutout of the image, which Phelps laughed about.

“I can’t even do this interview right now. I’m so freaked out by this dude behind me,” Fallon said. Then Fallon did his best to imitate Phelps’ famous pre-race backslapping.

So what does Phelps plan to do after the Olympics? He plans to run Boomer Phelps’ Instagram page.

Michael Phelps Retires to Run His Baby Boomer's InstagramMichael Phelps talks to Jimmy about his retirement plans, including a wedding, teaching kids to swim and increasing his son's Instagram followers. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Get more The Tonight…2016-09-02T11:00:02.000Z

Phelps and Fallon also played a game of Egg Russian Roulette on the show. all the eggs were painted like swimmers.

Egg Russian Roulette with Michael PhelpsMichael Phelps and Jimmy take turns smashing eggs on their heads without knowing which are cooked and which are raw. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Get more The Tonight Show Starring…2016-09-02T04:24:01.000Z

Fallon also had a quick Hashtags segment to highlight #MyRoommateIsWeird tweets.

Hashtags: #MyRoommateIsWeirdJimmy reads his favorite tweets with the hashtag #MyRoommateIsWeird. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Get more The Tonight Show Starring Jimmy Fallon: Follow The Tonight Show: http://Twitter.com/FallonTonight Like The Tonight Show:…2016-09-02T09:00:06.000Z

Lastly, Harry Connick Jr stopped by to plug his new daytime talk show Harry.

Harry Connick Jr. Gives Jimmy Some Barbecue Grilling TipsHarry Connick Jr. chats with Jimmy about the best ways to prepare meat and what to expect on his talk show, and he gets challenged to play little music on a tiny keyboard. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy…2016-09-02T10:00:03.000Z