PURPORT

Although Krsna is visva-vit, the knower of everything happening in the entire cosmic manifestation, as an innocent child He showed ignorance of Brahma's actions, although He could immediately understand that these were the doings of Brahma. This pastime is called brahma-vimohana, the bewilderment of Brahma. Brahma was already bewildered by Krsna's activities as an innocent child, and now he would be further bewildered.