The exercise was
A Fox caught in a trap escaped, but in so doing lost his tail. Thereafter, feeling his life a burden from the shame and ridicule to which he was exposed, he schemed to convince all the other Foxes that being tailless was much more attractive, thus making up for his own deprivation. He assembled a good many Foxes and publicly advised them to cut off their tails, saying that they would not only look much better without them, but that they would get rid of the weight of the brush, which was a very great inconvenience.
You typed
4 phOx c4UgH+ 1n @ +R@p 35C4peD, 8u+ 1n $0 doIN9 l05T HI$ +4IL. +hEr34Ph+Er, PheeL1n9 h15 l1F3 4 8URD3N phrom +Eh 5h4Me @ND rID1CuL3 T0 WH1cH HE W45 3XpO5ED, H3 ScHemED +O cOnvinc3 all tEH 0Ther fOx35 Th4T 8eIn9 +@iLL355 w@$ MUcH M0R3 4ttr4C+iv3, Thu5 m4K1n9 uP ph0R h1$ 0wnzoR DepRiV@TiON. h3 @s5EM8l3D @ GOod m4nY ph0xe5 4nd PU8LIclY 4dv153D tHeM T0 cU+ OphPH +he1r +@IL5, 54Y1n9 +HA+ TH3y W0ulD N0t oNLy L00K MUcH 8E++er w1+hoUT +hEM, bu+ th4t +H3y w0ulD GET r1D OF +eh w3i9h+ 0Ph +EH Bru$h, WhIch w@$ @ V3RY GR3@T 1NcoNvEnIeNCe.
Your speed was 142 WPM
OMFG YOU ARE TEH L33T!