Tejashwi Yadav, Bihar's deputy Chief Minister until a few hours ago, today termed his ex boss and ally, Nitish Kumar, a "tired Chief Minister", as the latter pulled a big switcheroo and joined hands with the BJP again. Mr Yadav underlined that his party, the RJD, did the bulk of the work in the Nitish Kumar-led government, adding that such work has not been seen in years.