How did Mayday Parade get their name?

Answer 1

As a band they would spend a lot of time climbing onto the rooftops in Tallahassee, especially when the winter parade was going on downtown. Alex, who was a fan of the word Mayday, made the suggestion that they name the band Mayday Parade in an effort to remember their time spent watching the hometown parades together from the rooftops. Everyone loved the idea and the name stuck.

Answer 2

There's no great story. They've always just said they needed a name when they got signed and the two words sounded cool together. It's totally random.