in-line skates

noun. skate with wheels in single file: a roller skate with a boot that has three or four wheels mounted in a single line.
-microsoft® encarta® 2009.© 1993-2008 microsoft corporation.
... by definition, that would fit that thing we coined as 'in-line skate'.
... by experience, i would call it 'my childhood memories full of excitement riding a pair of shoes on wheels.'
im thinking about getting a pair of those to burn some fat, i mean, apart from swimming, in-line skate's my only real sport..