slang; calling one "weak sauce" compares said individual to the "mild" sauce found at Taco Bell; weak, insignificant, attempting to be like the other hot sauces, but not living up to expectations.

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.

when something or someone is incredibly bad.

Having weak sauce means that you are weak sauce

something that sucks; something somebody did that sucks; and so on

Having character equivalent to that of wattered down mayonnaise. Meaning you have no talent, no spirit, no "huevos."

People who go to sleep early, for the sake of getting an extra hour of sleep.