shanks’s pony (??æ?ks?z) or shanks’s mareninformal one’s own legs as a means of transportation[C18: from shank (in the sense: lower leg); probably with a pun on the surname Shanks]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014