Re[2]: [tied] Re: My version

At 10:45:21 PM on Saturday, February 21, 2009, Rick
McCallister wrote:

[...]

> When I think of "to snow" in English, I think of a cover
> of "white lies" or even a blizzard of BS that leaves
> someone witless.

That's very likely the origin. The earliest known instance
is from 1943:

There he tries a snow job on her (hands her a line) and if
she falls for it she's been snowed under.

Brian