An unexpected guest joined Vice President Mike Pence on the debate stage during the vice presidential debate: a pesky fly. During the first and only vice presidential debate, a fly sat on the top of Pence's head for several minutes while he debated Democratic vice presidential nominee Kamala Harris. The fly quickly went viral and created a stir online. Democratic presidential nominee Joe Biden, referencing the fly, tweeted a photo of him with a fly swatter. The Biden campaign is also capitalized on the viral moment by adding a fly swatter to their store, which said "Truth Over Flies."