I see what you mean. I think it comes from the US 'ring' thing - you know, they get class rings, team rings, NFL winners get rings. It's less touching knuckles than touching rings - even if symbolic.
We should think ourselves lucky it's knuckle touching. The way Weekley whoops and hollers I'm sure he'd be more at home knuckle dragging!
Add the gormless booing by the crowd everytme he makes a shot........ only in America!
anyone see Anthony Kim attempting to knock Phil Mickleson out with a series of high fives yesterday!? Mickleson was even beginning to flinch towards the end of the round such was the ferocity of Kim's expression of congratulations.