When someone consistently "Likes" their own statuses/comments
John Smith: "I am so funny" -John Smith and 2 others "Like" this...
There goes John, McNashing himself again! He's so arrogant!
by Ltobz December 5, 2011
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Can be likened to a Dirty Sanchez, except the man's semen is used in place of excretion.
Some people like to Dirty Sanchez. Personally, I prefer a Creamy McNash any day of the week.
by Creamy McNasher December 15, 2010
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