Ha ha...
Paul said 'sitting on sledges', us British call people who sit around a lot 'couch potatoes' - hence 'sledge potatoes'!
In fact, you've got me thinking now, see below:
The term 'couch potato' was first coined in 1976 by a friend of American underground comic artist Robert Armstrong. In the early 1980s, he registered the term as a trademark with the US government; he also co-authored a book with Jack Mingo, called The Official Couch Potato Handbook, which delves into the lives of 'couch potatoes'.
The term eventually entered common vocabulary, generally defining one who unceasingly watches television as a form of 'Transcendental Vegetation' (TV for short).
The phrase was entered into the Oxford English Dictionary in 1993. Mingo, the Minister of Information and Propaganda for the official Couch Potatoes organization, explained why the potato was chosen as a vegetable role model: "We're an underground movement, we're all eyes when planted in front of the TV, vegetation is an important part of our existence. The potato was also chosen because of the potato chips that couch potatoes ate while watching television.
Amongst Canadians, adhering to colloquial vernacular, the couch potato is referred to as the Chesterfield Spud or a Jon Whyte
Bet you wish you'd never asked!!!
Good luck with the medals.
Heather