its not right to do and I am not defending that person but you all should admit that there are some drivers who create unnecessary traffic jams coz of their driving skills. here is one example that if you are coming from service road to 3 lane main road and then you have to take left so IT is not necessary you have to find complete 3 lanes free to just directly go to third lane so you can easily take left or U turn what ever you want to do. Go to the first lane, give indicator and then one by one go to Third Lane. This is one of the example

We should discuss those as well :)