By Yelena Mandenberg Donald Trump has launched a bizarre tirade, claiming that Joe Biden “solied” himself in the Oval Office, during his latest off-the-wall outburst. The ex-POTUS and GOP leader made these odd comments while speaking for about 45 minutes at a swanky dinner hosted by billionaire John Paulson in Palm Beach, Florida’s ritzy island enclave. Trump also joked that Biden had an incident with the historic Resolute Desk, much to the amusement of those gathered. He even quipped that his well-heeled audience was temporarily shielded from the undocumented immigrants in the vicinity, accor…