So when do you get to be too old for one of those 25 cent kiddie-rides outside the grocery store?

I suppose it's probably about a year after you finally realize that you just don't fit in/on the thing anymore.

Note: This was the cost I grew up with. I didn't look to see what they cost here in Australia - likely 50 cents since they don't make a 25 cent piece - and the girls seemed much more interested in just sitting on the thing rather than asking for change to fire it up.