Well, did he mean anything much by it?
Let's say there is meaning there. Crazy wag time. But first background.
First,
Abeloth or something similar is locked up in the maw.
The ones are force like entities represented by tarot cards father, mother, son, daughter, servant.
Mother went missing, mortal Servant filled in mother's role. Servant grew afraid of her death so drank of forbidden pools of knowledge gaining immortality but turning her into dark side creature abeloth. Son and daughter, brother and sister, duty then becomes to keep servant imprisoned within the maw.
Vader uses a particular weapon to kill the ones, brother and sister. And abeloth is now nearly, if not fully, free. I found a website that better describes everything but I'm on my kindle so can't link it.
http://starwars.wikia.com/wiki/The_OnesCrazy wag:
Jar jar comes onstage to represent the ones, or is representing abeloth. I'm more inclined to go with the idea that jar jar is or becomes a representative of the ones. In the books, the Sith are the ones who are unknowingly representing abeloth. So, she is the true phantom menace that is alluded to in the title.
In conclusion, jar jar binks is or becomes a representative of the Father who tasked him with locating, verifying the chosen one who would bring balance to the force. Jar jar is following this path that will ultimately lead to abeloths destruction for good though there were many casualties along the way. He set Palpatine up to finally reveal himself.