"Mr President, how do you handle promises that you have made when you were running for election, and how do you handle them? I mean, what do you say to people?" the 82-year-old asked the imaginary president.
“What do you mean, shut up?” Eastwood said to the chair at one point.
Baffled by the bizarre bit, social media users lit up Twitter and Facebook with commentary ridiculing the famous actor and director, known for classics like "Dirty Harry," "Million Dollar Baby" and "Gran Torino."
Clint, my hero, is coming across as sad and pathetic. He didn't need to do this to himself. It's unworthy of him.— Roger Ebert (@ebertchicago) August 31, 2012
It wasn't long after his speech that Eastwood's "invisible Obama" gimic became a parody Twitter account, now boasting more than 49,000 followers.
One nation! Under God! Invisible!— Invisible Obama (@InvisibleObama) August 31, 2012
Cilnt Eastwood's performance opposite an invisible man was the best since Daryl Hannah's. I should know. I had a front row seat.— Invisible Obama (@InvisibleObama) August 31, 2012
Even the real President Obama joined in on the fun:
Eastwood's act quickly gave birth to a new meme, "Eastwooding," in which people post photos of themselves talking to empty chairs.
With Romney aides now distancing themselves from Eastwood's poorly received convention speech, political observers are left to wonder whether the octogenarian's unscripted television snafu ruined Romney's moment in the spotlight.
"Unfortunately for [Romney]," The New Yorker's John Cassidy wrote, "the only thing that most people will remember about it is the jarring picture of a frail-looking American screen legend, his hair askew, standing and talking in a halting voice to an empty chair."
In an interview with "CBS This Morning," Ann Romney had only kind words for Eastwood, but admitted that she "didn't know it was coming."
"He's a unique guy and he did a unique thing last night," she said.
Celebrity Couples of 2014 [PHOTOS]