The ability to argue without end, but not going off topic.
Hosein Sauce Effect: The eventual agreement with someone because you are mentally exhausted and do not want to argue back at them because they have been arguing without end.
Something considered to be extremely lame, disappointing, or undesirable could be described as "weak sauce." The term originates from a technique used in hockey called a sauce shot. A wobbly sauce shot is refered to as "weak sauce," hence the negative connotation.