There is a great debate going on here. In the commercial for Canadian Club Whiskey, where they are playing soccer and it shows audiences around the world watching intently, what is the word used when one player kicks the other right in the family jewels? Is it “He really gave it some willy?” or is it "He really gave it some welly? Please settle it for us.
“Giving it some wellie” is British slang for kicking something hard, presumably derived from the Wellington boot. Presumably that crazy Canuck-speak follows its British counterpart.
Eh?
And all things considered, the phrase “giving it some willy” conjures up something very different to hitting or kicking something hard.
It is definitely “giving it some wellie”.