George tells Missy that "most people around here" (East Texas near Galveston) root for the Texas Rangers baseball team (based in Dallas-Fort Worth). East Texas is Houston Astros territory and this is the team "most people" in that region follow.
The pins at the bowling alley Connie and Sheldon were at say USBC on them, which stands for United States Bowling Congress. The episode takes place in 1991 and the USBC wasn't formed until 2005 when the American Bowling Congress, Women's International Bowling Congress, Young American Bowling Alliance, and USA Bowling all merged under that name.