Hamlet is referring to Polonius when he says "These tedious old fools".
In Shakespeare's play <em>Hamlet</em>, Polonius is the counsellor of the king but he is also Ophelia's father.<u> He is on Claudius's side and he even commits to spy on Hamlet</u>. Moreover, <u>throughout the play, Polonius tries to control her daughter's life.</u> He is the one that tells her to stop seeing Hamlet. For all these reasons, Hamlet considers him a "tedious old fool". Later in the play, he kills Polonius accidentally.