My cigarette lighter keeps lowing fuse right when I plug charger in. There is nothing stuck in it shorting it out. What else could it be

 

Could be something touching behind it or it could be in the cord for the phone charger.
Try something else in there and see if you can figure out if it's the charger or the outlet.

 

have you looked inside of the cylinder to see if a dime or a penny fell in it? If that is clear then you can generally take apart the male connector as there is a fuse in there. Take it apart and make sure there is not any wires shorting inside.

 

does the lighter work in it?

 

might be due to wire... check it properly and see through the connection also... use it in other port and see if it works or not