Free Subway for a lifetime but there's a unique catch

Subway is searching nationwide for its biggest fan — a fan willing to change their first name to "Subway" in return for deli heroes for life.

The search takes place between Aug. 1 and Aug. 4 and fans can visit here to enter if they commit to the legal name change.

Subway will select one winner and will reimburse the fan for the legal and processing costs involved in a name change.

Fans have to be 18 years or older (19 years in Alabama and Nebraska and 21 in Mississippi).