To be the "Noah" of a group, means to be the member of any group who is the least respected and the most likely to succumb to verbal and/or physical harm.
A: "Wow (name of friend), you really suck."
B: "I don't suck nearly as bad as (name of the "Noah")!"
A: "Yeah, that's true."
B: "Well he is The "Noah" of the group."