Viza
Wikisimpsons - The Simpsons Wiki
A Viza is a type of credit card. Both Ned and Rod Flanders owns one.
History
When Bart and Lisa find Homer and Marge, Homer and Marge run off using Ned's Viza. Bart and Lisa follow them using Rod's Viza.
Behind the Laughter
Viza is a parody of Visa, a payment company.