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1.
The common quote said after one performs a blasphemous act, therefore embarassing him/her self.
George: Yo we're going the wrong way.. where's my house?

Non-Idiot: Your in it.

George: Oh god. Kill myself.
by Dr. Kremler May 09, 2009
 
2.
An alternate way of saying "I don't like this situation!"

The same as Kill Me, which is usually never taken in a literal sense and only used to express the frustration of a current situation.
Teacher: You got a ten!
Student: Out of ten?
Teacher: Out of two-hundred!
Student: Kill myself!
by Tippytom May 10, 2007
 
3.
Definition: (Adjective/verb/noun) - a word used to describe a situation or emotion of one's killing himself.

Killmyself originates from a depressed boy close to New Orleans. It is a one-word representation for suicidal people to say. Instead of the two-worded phrase "Kill myself", killmyself is used as one word. It can NEVER be hyphenated. Ever. Never. Ever.
<Adjective> - This shirt looks so killmyself on me.

<Verb> - When I get home from school, I am going to killmyself.

<Noun> - Killmyself is fabulous.

* The slang form of killmyself is killmahself. It is also one word. NO hyphen (-).
by Brandon Lemoine September 25, 2004