Now for American's out there that don't know what poutine is (note: poutine is not coming up on spell check here!) poutine is a French Canadian dish where french fries are covered in gravy and then melted cheese curds are melted into it. The Brits may know this as chips and gravy with cheese...but poutine says it all.
So wtf does this have to do with The Poutine Sex position? Well, the most Canadian sex position is the poutine -- it's called that because you stick you 'fry' into the gravy and then garnish with white cheese curds.
And according to South Park it looks like this:
See, you have to dip your fry down into the gravy to get it right. :)