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1. self-pwn
When an attempt to insult someone (or pwn them) backfires and results in self-humiliation.
<PersonA> eat my fucking shit
<PersonB> I would but I'm too busy suckin yo daddeh's cock
<PersonA> ....
<PersonB> er, wait..
<PersonC> self-pwn
<PersonB> fuck
2. self-pwn
1: When you do something utterly stupid, it causes something bad to happen to you

2: suicide

3: Variation of self-own
Guy 1: He slipped on his skateboard and fell down the stairs, breaking his neck.

Guy 2: Self-PWNED!
3. self-pwn
when one humiliates themselves to thepoint point of being pwned
Yo whats up with that kid during class, he is always making stupid comments and self-pwning himslef.
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