The Bills are having a pretty good offseason, but Bills fans are really winning the pre-draft period.

In typical Bills Mafia fashion, they're responding to a challenge by donating to a charity in another team's city.

It all started with a Twitter poll: Fox Sports was polling fans to see which NFL franchise has the best supporters. 

The Bills held the lead deep into the bracket until the Titans came out of nowhere and took the title after a fan paid more than $650 to buy automated tweets.

Although the Bills have some bad history with last-minute losses to Tennessee, this time it was Buffalo pulling off the Music City Miracle.

Much like fans donating $400,000 to the Andy and Jordan Dalton Foundation when the Bengals’ quarterback helped the Bills break their playoff drought, Bills fans responded to the loss by donating more than $15,000 to the Nashville Children’s Alliance, an organization that helps child abuse victims.

Some fans were donating the same amount as what was paid for the fraudulent votes.

Donations continue to pile up and Bills fans, as usual, are getting the last laugh.