Bihar Chief Mnister Nitish Kumar's biggest rival Tejashwi Yadav today scorned Deputy Chief Minister Sushil Modi's quick budget calculation and his inference that the young leader will not be able to fund his promise of 10 lakh jobs. "It is very amusing to know that the Chief Minister does not know it after running the government for 15 years. He is making himself a laughingstock. So much of this is planned expenditure," he said, pointing to the vacant posts in various spheres including teaching.