knock wood v.s. knock on wood

[Lost_Soul]

Hi,

Which one would you likely to say:

1. I hope you'll never need insurance. Knock wood
1. I hope you'll never need insurance. Knock on wood

Thanks.

[Guest]

Hi everyone! I'm new on Your forum.
I'm 28 yo guy from Fiji. Hoping i'm welcome here:)

[Haihao]

Knock on wood or touch wood but never knock wood.

[Yankee]

Hi Alex

I use 'knock on wood'.
There may be some who omit the word 'on', but I can't recall ever actually hearing it that way.
.

[Lost_Soul]

Thanks everybody !

Hi, Amy

I heard Alf say "knock wood" (I believe you know Alf, don't you , a furry little alien with big black eyes and long snout). I looked "knock wood" up and found only "knock on wood", and that caused some confusion in my mind. Probably, I "misheard" what Alf said .

[Yankee]

Hi Alex

Sure I remember Alf. Even though it's probably been more than 20 years since I watched an episode, who could possibly forget such a face?
.