Having one's anus forcefully, repeatedly and not-always-voluntarily resized. Size 9ing is most often performed courtesy of one's new cellmate's johnson, although at some parties, a proper piss-on / pass-out may elicit the act.
Guy 1: "Why is Shiela walking all funny?"
Guy 2: "She got Size 9'ed after passing out face down on the couch at Bob's party."
Guy 2: "She got Size 9'ed after passing out face down on the couch at Bob's party."
by The Evil Steve August 30, 2005
Get the size 9'dmug. by Jack the Douche April 3, 2019
Get the Micah's Penis Sizemug. by PrettyPlusSize October 18, 2011
Get the Pretty Plus Sizemug. by Flip April 26, 2004
Get the plus-size modelmug. by latasha ferosh April 22, 2008
Get the size double zeromug. by i drive the bus October 28, 2004
Get the size of a small walrusmug. by uncle t-bag December 29, 2008
Get the fun-sized personsmug.