She's a freak, she's a weirdo, what the h*ll is she doing here? Eleven finds herself in a basement and has to listen to Mike go on and on about toys...come on MIke, hasn't she suffered enough? 

We also start the saga of the gaslighting of Joyce Byers that starts because her phone keeps prank calling her with lightening bolts... I want to see the Demogorgon giggling on the other line like "hey, is your refrigerator running? Cause your son sure is... tee hee"