<p>Donald Trump has divulged details of a cognitive test he "aced" -- including a five-word memory challenge he said proved he had the "mental stamina" to lead the US.</p>.<p>"Person. Woman. Man Camera. TV," the US president recited as he revealed details of the much-discussed test to Fox TV on Wednesday.</p>.<p>"The last questions are much more difficult," he said in an interview on "Tucker Carlson Tonight", in which he repeatedly questioned the mental capacity of his Democratic rival Joe Biden.</p>.<p>"Like a memory question. It's like, you'll go: Person. Woman. Man. Camera. TV," the president said. "So they say, 'Could you repeat that?' So I said, 'Yeah. It's: Person. Woman. Man. Camera. TV.'"</p>.<p>"Then, ten minutes, 15, 20 minutes later they say, 'Remember that first question... Give us that again."</p>.<p>"And you go: 'Person. Woman. Man. Camera. TV.'"</p>.<p>"And they say 'that's amazing. How did you do that?'"</p>.<p>"I do it because I have, like, a good memory," Trump continued. "Because I'm cognitively there."</p>.<p>In the interview Trump also called for his Democratic rival Joe Biden -- currently leading Trump in polls ahead of the November presidential election -- to take a similar test, because "something's going on."</p>.<p>"You need physical stamina," he said. "You need mental stamina... we have to be sharp... President Xi is sharp. President Putin is sharp. Erdogan is sharp."</p>.<p>The interview quickly drew ridicule on social media.</p>.<p>"i seriously cannot keep up," tweeted Sarah Cooper, a Trump impersonator who shot to fame with parodies of some of the US leader's greatest hits, including "How to Obamagate" and "How to strong death totals".</p>.<p>Cooper targeted Trump in a previous video "How to cognitive", in which she lampooned a previous interview he gave to Fox, where he professed to have "aced" an unspecified cognitive test.</p>
<p>Donald Trump has divulged details of a cognitive test he "aced" -- including a five-word memory challenge he said proved he had the "mental stamina" to lead the US.</p>.<p>"Person. Woman. Man Camera. TV," the US president recited as he revealed details of the much-discussed test to Fox TV on Wednesday.</p>.<p>"The last questions are much more difficult," he said in an interview on "Tucker Carlson Tonight", in which he repeatedly questioned the mental capacity of his Democratic rival Joe Biden.</p>.<p>"Like a memory question. It's like, you'll go: Person. Woman. Man. Camera. TV," the president said. "So they say, 'Could you repeat that?' So I said, 'Yeah. It's: Person. Woman. Man. Camera. TV.'"</p>.<p>"Then, ten minutes, 15, 20 minutes later they say, 'Remember that first question... Give us that again."</p>.<p>"And you go: 'Person. Woman. Man. Camera. TV.'"</p>.<p>"And they say 'that's amazing. How did you do that?'"</p>.<p>"I do it because I have, like, a good memory," Trump continued. "Because I'm cognitively there."</p>.<p>In the interview Trump also called for his Democratic rival Joe Biden -- currently leading Trump in polls ahead of the November presidential election -- to take a similar test, because "something's going on."</p>.<p>"You need physical stamina," he said. "You need mental stamina... we have to be sharp... President Xi is sharp. President Putin is sharp. Erdogan is sharp."</p>.<p>The interview quickly drew ridicule on social media.</p>.<p>"i seriously cannot keep up," tweeted Sarah Cooper, a Trump impersonator who shot to fame with parodies of some of the US leader's greatest hits, including "How to Obamagate" and "How to strong death totals".</p>.<p>Cooper targeted Trump in a previous video "How to cognitive", in which she lampooned a previous interview he gave to Fox, where he professed to have "aced" an unspecified cognitive test.</p>