My iphone 5 charger is like going bolistic?

It used to work fine but now only sometimes when I plug it in, you know how it vibrates 2 times? Well it will do that then a minute later it will do it again and stop charging then 15 seconds later it will vibrate again and begin charging what is up with my charger?

It might not be the charger… It could be the the phone… Try and charge it with a different charger.
If it still doesn't work and the phone is less than year old you are eligible to receive a DIY repair free… You can go to the store or you can call 1-800 my apple to get the replacement / repair set up…