Am I seriously the only person in the whole world who didn't know this??

[Bluesheep8]

Remember Tiswas? The kids Saturday morning TV programme from the 80s?
Well I discovered yesterday that the letters stood for:
Today Is Saturday, Watch and Smile.
Unbelievable! How did I not know this before?!
I'm now thinking everyone else knew this all along apart from me.....

I have just googled the meaning of the word tiswas and it says " a state of excitement or confusion," so I was almost right.