CPM was the biggest party in UF govt. So after jyoti basu told he wont becom PM. then CPM told none from cpm would so next big party was Janata Dal.
Laloo told that he wants to become the PM.
Everybody opposed so laloo got angry and told 'Humko PM nahin banayiyega to kya kisi gadha ghoda ko PM banaiyega'. Gowda sir was sleeping he heard godha so thought they are talking abt him and stood up.
Then poeple realised why not him and rest is history. :-)