The Professor, despite being a scientist, always fails in his malefic plans (like Wile E. Coyote) of the times that I try to steal the magic bag of Felix or to get rid of him.

In the midst of all that, patience has a limit.

This is what I would have imagined if the Professor were opposed to the friendship of Felix and Poindexter, knowing that if his nephew is a friend of Felix would turn against him.

But it is also about frustration due to failures in getting the magic bag of tricks and know how it works. (which only Felix knows)