SAN ANTONIO -

The Geico commercial series that ends each ad with, "how happy are people who save hundreds of dollars on car insurance?" has become a big hit.

One of the more popular spots is the one that features a camel walking through an office, egging people on to admit that it's "Hump Day."

The Dallas Mavericks have put out a similar commercial with a twist. Mavericks forward Dirk Nowitzki walks through an office, obviously excited that it's "Game Day." The ad is a humorous attempt to sell season tickets.