An initialism of "there's no such thing as a stupid question," meaning any question you might have is valid and worth asking, no matter how simple or stupid it may seem to you or other people. The abbreviation is only used in written communications, especially online. A: "I'm sorry if that's a stupid question to ask on this forum." B: "TNSTAASQ. We're all here to help each other!"
There’s no such thing as a stupid questionand TNSTAASQ
sent. & comp. abb. Go ahead and ask your question without referring to it as stupid. There’s no such thing as a stupid question. But keep trying, you’re getting close.