Slang for someone who shoots an exceptionally large volume of ejaculate, typically after intercourse, and especially when a huge mess on the sheets and bedding results. Is a reference to the much-publicized oil spill from the 1980s.
Girlfriend1: Yo, look at those sheets! X-on must have been here!
Girlfriend 2: Ya, I'll be cleaning up for days.
Girlfriend 2: Ya, I'll be cleaning up for days.
by Shogun Xll March 22, 2007
Get the X-onmug.
Get the ("") =^x^= ("")mug. by {{{{{{{{{{{{{{{}}}}}}}}}}}}}}} May 18, 2013
Get the xmug. by Linkzie July 5, 2006
Get the x;mug. by Teh_Kiwi_Bird June 13, 2010
Get the Xmug. person 1: "My boyfriend isn't talking to me much lately :("
person 2: "That's good :x"
Person 1: "Aww, Ily :)"
Person 2: "Ily too :x"
person 2: "That's good :x"
Person 1: "Aww, Ily :)"
Person 2: "Ily too :x"
by ThoughtsofDarkness October 4, 2009
Get the :xmug. 