When a fly landed on Vice President Mike Pence's head during the debate on Wednesday night, it immediately became one of the only things people could talk about online.
The fly sat on Pence's head for about two minutes as he and Democratic vice presidential nominee Kamala Harris debated systemic racism.
The Biden team immediately jumped on the viral moment, posting a photo with the candidate holding a fly swatter.
"Pitch in $5 to help this campaign fly," Biden tweeted.
By 10:45 p.m. EDT, the Biden campaign had created a URL redirect mocking the incident, flywillvote.com, which takes potential voters to a DNC website that aims to help register people to vote.
Still, more people on Twitter enjoyed the moment. Below are some highlights.