things that seem like a good idea at the time, but later turn out to be really bad ideas:

• Riding a bicycle while holding onto a dog on a leash (Dad, thanks for this one!!)
  

• Joining Columbia Record house.

• Cashing in your life savings and giving it all to an apocalyptic, charismatic leader who is a major stockholder in kool-aid.

• Telling your spouse about the time you caught the clap from a haitian dwarf.

• Jello shots.

• Refinishing those hardwood floors yourself.

• Shaving your legs when you are in a hurry.

• Ferrets.

This is an ongoing list, so please feel free to add your own.