A BIZARRE SLIP by US presidential candidate Joe Biden is already being used against him by supporters of several Democratic rivals.

In his closing speech during last night’s Democratic debate, Biden urged those convinced by his arguments to: “go to Joe 3-0-3-3-0, to help me in this fight”.

Biden seemed unsure himself what he meant but it was nothing to viewers who were similarly mistified.

Biden’s campaign sought to dampen down the confusion after the debate by sharing a picture of what he should have said.

It seems that Biden should have been sharing a phone number for followers to text, not a website, as he seemed to be suggesting.

It was too late however and various websites with variations of ‘Joe 30330′ have already sprung up.

One quick-thinking supporter of candidate Peter Buttigieg even managed to grab joe3030.com to redirect web users to that candidate’s website.

Biden’s apparent mix up of his website and text number has led to further questions over his connection with younger voters.

Biden, 76, has rejected claims that he is too old to run and last month said that if given the chance in a televised debate next year, he could challenge President Donald Trump, 73, to a fitness duel.

In Biden’s previous debate in June, Democratic candidate Eric Swalwell, 38, called on him to “pass the torch” to a new generation.

“I’m still holding on to that torch,” Biden snapped back.