weak sauce

or weak·sauce

[ week saws ]
/ ˈwik ˈsɔs /

noun Slang.

something that is weak, inadequate, inferior, etc. (often used attributively): His jokes are mostly weak sauce. I got a pretty weak sauce response to my complaint.

Origin of weak sauce

First recorded in 2005–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019