I saw a [Geico commerial](http://www.ispot.tv/ad/7fZX/geico-oldest-trick-in-book) with Elizabethan verb forms that bothered me because they were being misused:

>Trick Number 1. **Lookest** over there!  
>_Servant looks_  
>Haha! **Madest thou** look!  
>So **endest** the trick!

What's wrong with this grammar?