ride a horse foaled by an acorn
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horse — {{11}}horse (n.) O.E. hors, from P.Gmc. *hursa (Cf. O.N. hross, O.Fris. hors, M.Du. ors, Du. ros, O.H.G. hros, Ger. Roß horse ), of unknown origin, connected by some with PIE root *kurs , source of L. currere to run (see CURRENT (Cf … Etymology dictionary
Ruffian (horse) — Thoroughbred racehorse infobox horsename = Ruffian caption = Ruffian Coaching Club American Oaks Parade sire = Reviewer grandsire = Bold Ruler dam = Shenanigans damsire = Native Dancer sex = Filly foaled = 1972 country = USA flagicon|USA colour … Wikipedia
Mom's Command — Sire Top Command Grandsire Bold Ruler Dam Star Mommy Damsire Pia Star Sex Filly … Wikipedia