when your friend starts to date someone and they ditch you to hang out with their someone special. when it is severe enough then the name "weak-sauce" should be used. also appropriate if someone does something stupid or very embarressing.
guy: hey bro, wanna hit the mall up today
guy #2: no man im hangin with the lady tonight
guy: weak-sauce bro
applies to someone who tries to impress you or do something cool, but instead acts similarly to a mentally retarded kid hooked on ice
*Andrew(at school recess in the front of hot chicks):Hey guys this sucks lets play soccer in the hallways!!!
*Aaron: That is fuckin 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.
Damn, that fool at the gym was weak sauce.
A way of saying that something is lame or boring.
"You mean the phish concert tickets are sold out? Weak Sauce dude."
Adj.
1. Describes the lamest of the lame. The epitome of awful.
1. That bud was weak sauce.
Describes an event or object that lacks inesnity and/or fails to fully accomplish its purpose. Used to degrade, or convey ones dissatisfaction in something.
That concert was weak sauce, I can't believe I paid to see it.
Or
Your Face is weak sauce.
The utmost example of lame.
The pinnacle of pointlessness.
Weak-sauce is best used as an adjective to decribe how pitifully someone has failed when they were actually trying their very best.
When motivating your children:
"Really son, is that the best you can do? What is that? A TURD!!! You are supposed to be drawing a picture of your family for this homework assignment! Do you hate us? Would you prefer living on the street? That finger painting is so WEAK-SAUCE!!! No, you are weak-sauce!