weak sauce

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.

Having weak sauce means that you are weak sauce

when something or someone is incredibly bad.

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."

Etymologically, weak sauce was born in Long Beach California circa 1996. It was inspired by the G Love song "My baby got sauce" to which the adjective weak was added and a neologism was born. I used the term intermittently and was surprised when, two years later, I was visiting northern california and heard it used. Since then, it has spread and false claims as to it's origen have been made.

The full usage is now commonly considered passé. Currently, in Long Beach, sauce is an acceptable description of something thats shitty. It is interesting that G Love's "sauce" was a good thing and it has in fact become a polar term.