What does an “objection” mean?

You’re watching Law And Order, and you hear one of the lawyers say “Objection, Your Honor!” and you have no clue what it means? If you want to know what it means, then watch the video! 
FYI: I may have misquoted the 3rd element of hearsay, so please standby while I research it. Otherwise enjoy the clip. 

PS if you are curious on how I live my lifestyle as an entrepreneur while in law school go to my website http://www.livelikeanentrepreneur.com