Aside from the parody, this kind of "plain English" contract always backfires.
While most contracts are written by people who secretly wish we still spoke Latin, the real purpose of contracts is to write down expectations with extreme precision so that the parties have some guidance when it comes to worst-case scenarios.
When you try to use "handshake deal" language in a contract, it still needs to be as precise as possible.
P.S. NDAs between friends is a bad idea to begin with.
