What does it mean if your ears are cold?

It's different in different cases! Here are some:

1. If you have just washed your hands, used a cleaner for your hands, have touched water, have been swimming, or been doing anything to do with something cold, then you touch your ears and they are cold, it really doesnt mean ANYTHING. Now if you KNOW you have a fever, I'm not wrong, you just are sick... you probably just touched something cold when you are sick JUST to prove me wrong SOMETIMES!!!
2. If your ears are cold when you have just woken up, been laying around, or some other reason when you have been around stuff ROOM TEMPERATURE you may have a low grade fever! You may not but it usually works for me!
3. If you have been touching or around something HOT and you touch your ears it is because of the hot thing. It like backfires to make your nerves think the next thing you touch(skin, glass, floor, ect.) feel cold! Your body is so used to the warmth when it hits something, it feels cold!