President Joe Biden on Thursday held his first event with his vice president since handing over as the Democratic Party’s presidential nominee — and took the opportunity to take a humorous dig at Donald Trump. The pair were speaking in Maryland to announce a deal to lower prescription drug prices — a key 2020 campaign promise for Biden. Biden took the podium to chants of “thank you, Joe” from the crowd. Want more breaking political news? Click for the latest headlines at Raw Story. But he paused the prescription talk to take a jab at Harris’ opponent. A frequent target of Trump’s accusations t…