There have been some down right horrible names for teams down through the years. Do yourself a favor and don't go back through team names from the 20s and 30s.
There are a few that I have hated over the years.
Las Vegas 51s? PCL Baseball (Your either in the Sr. League or you don't exist)
Leghigh Valley Iron Pigs? IL Baseball (your a pig, it's self explanatory)
Nashville Sounds? PCL Baseball (Enough with the Music already, we know about the Grand old Opry)
Seattle SuperSonics? NBA Basketball (What can I say, I hear SuperSonic and I see Jack Sikma)
Albuquerque Isotops? PCL Baseball (Just stupid. Los Alamos is like 100 miles away. You couldn't do better then that? Now, the Dukes, that was a great name)
Charlotte Crossovers? ABA Basketball (Are we talking Gender here or what?)
Columbus Life? ABA Basketball (There is a Federal Pen in Columbus. Coincidence? I think not.)
Dallas Burn? MLS Soccer (Just the entire MLS is screwy with team names but Dallas, you could have done much, much better. I mean COME ON MAN!)
Florida Thundercats? ABA Basketball (This was like a cartoon back in the 80s right? Not even a good one.)
However, I believe the worst (at least for me) is the Halifax Rainmen of the PBL Basketball League. I mean seriously, your either a big Dustin Hoffman fan or Tom Cruise. Either way, it can't be good. Your gonna name yourself after Raymond Babbitt. Definitely, definitely not a good name. Definitely not good.