The tag line seemed less terrible after head coach June Jones tweeted a link to the above video and it became clear that SMU is Dallas' team, not Dallas,Texas, but even that's a stretch. SMU isn't in Dallas but the Park Cities, and its cost puts the school out of reach for most Dallasites. Tuition and fees alone are $41,750 per year, about one-and-a-half times the per-capita income in Dallas.
Class and geography aside, the slogan ignores the fact that Dallas already has a football team called the Cowboys. In terms of college sports, Dallas doubtless has more Longhorns and Aggies fans -- and possibly even more Sooner fans -- than Mustang loyalists.
I'm an SMU fan, but that's not because the university's athletic program is somehow emblematic of Dallas. It's because my parents went there and I grew up watching their games. And to be honest, the new slogan has a nice ring to it. It just happens to be wrong.