I remember when McDonalds came to South Australia and the promo on the back of the jingle was that as a "kid" (guessing under 12 but Rolf Harris thinks it is more like 8) you had to say the jingle in less than 4 seconds to get something like a free fries or coke. So for weeks my friends and I spent a portion of each lunchtime practicing it to a person counting to 4. We became champs at it, the words came out of our mouths in a blur, much in the same way a female communicates to a friend that "there is a 50% off shoe sale".
Finally, it came the day we went to McDonalds ( back in the 70s it was a treat, not an expectation 4 times a week) and I went up to the counter and said I'd like to do the jingle to win my prize. Here I was thinking that this was going to be a timed event with a leader board much like Top Gears Star in a cheap car and I hit the ground running spewing out the Two all beef patties special sauce lettuce cheese pickles onions on a sesame bun, expecting the woman ( whom I guess was probably 15 at the time but to a 7 year old, that is a woman) to say " feck me, that could be the world record, get the boss".
Instead she turned, grabbed a container of fries and sent me on my way.
It was a good lesson to learn early though, any time you go to McDonalds, even though you'll have high hopes, you will leave somewhat disappointed.