"He (Prasad) has turned impatient as power has slipped out his hand ... Deprived of power his condition resembles a fish without water," Kumar told function here organised by his party JD(U) on the 89th anniversary of socialist leader Karpoori Thakur.
Without naming Prasad, the CM said he is addressing rallies across the state to throw NDA government out of power but the condition has changed in Bihar due to its rapid development. "People will not give any chance to such people."
Kumar advised Prasad to 'get his eyes treated' for saying on numerous occasions that no development was visible in the state under the NDA.
The RJD supremo, he claimed, was worried and spoke to Union HRD Minister Kapil Sibal over phone after media reports that special category status for Bihar was discussed at the Congress Chintan Baithak in Jaipur.
Kumar said the demand for acquiring special status for Bihar seems to be in the 'positive direction' as Union Finance Minister P Chidambaram talked on the same lines as that of JD(U) when it had written to Prime Minister Manmohan Singh and its Adhikar rallies.
JD(U), he said, would organise a rally in Delhi on March 17 in support of demand for special status for Bihar.
Kumar also charged the opposition with confusing the people on the issue of special status and said the former prime minister A B Vajpayee had never set up a committee under his chairmanship for special category status.
"I had submitted a memorandum signed by 47 MPs to Vajpayeeji for a special package after bifurcation of Jharkhand from Bihar and not for special category status," he said and asked the opposition not to resort to lies.
Kumar said the demand for special status for the state arose through a resolution adopted in state assembly in 2006.
Later, the state legislative council too passed a similar resolution.
"If the Centre do not hear us on the special status demand, it will be bound to do so after 2014 general elections as the union government cannot ignore peoples voice," he added.