Michael Strahan may have won April Fools' Day on Thursday while shocking his fans by convincing them that his famous gap-tooth had been closed. 

The Good Morning America co-host appeared to be serious when he posted a video of himself visiting Dr. Lee Gause, who was pretending to close the gap tooth.

“If I go home and say I’m going to do it, it’s going to be ‘don’t do it.’ If I post, it’ll be ‘don’t do it.’ If I talk to my friends, it’ll be ‘don’t do it.’ If I tell my business partners, it’ll be ‘don’t do it.’ But I’ve got to do what I want to do for myself,” Strahan said in the Instagram video, telling the dentist he was the “only one who knows.”

Many of his followers, who were fooled by the stunt, commented on the post to express their disappointment.

"I did it," Strahan wrote on Instagram while his fans appeared to be heartbroken.

The former New York Giants linebacker later posted another video to reveal that the gap-tooth is here to stay. Before he revealed the truth, however, the prankster led his fan on an emotional rollercoaster. 

Wearing a mask as he spoke to the viewers, Strahan appeared to be giving a lengthy explanation about his decision to close his gap.

"I've had it for almost 50 years now," he said. "A lot of people say 'you make me feel good about rocking mine.' I know it was a shocker to see it gone. But I just want to tell you guys that I appreciate all the love that you show. Live the way that you want to live, do what makes you happy. I'm happy that I did it."

When the mask came off, however, that famous gap was still as wide open as it has ever been.

“I just wanted to say April Fools’. C’mon, man," the football legend said. "The gap is here to stay for a little while. Not going anywhere anytime soon. My mama likes it.”

According to TMZ, many viewers who watched Strahan's prank are now calling Gause to get treatment for themselves. At least 100 people have called the dentist, saying they love what they saw in the video, even if it was fake. Some have decided to fly from other parts of the country to get the treatment at Smile Design Manhattan clinic in NYC, which has a price range of $5,000- $50,000. 

Gause said Strahan is his real patient. But the dentist adds that he will never permanently fill the gap because it's a signature trademark.