V. To make an idiot of yourself on purpose to try to gain attention.
V.2 to fail at something with much embarrassment on one's own behalf. see: EPIC FAIL FAIL
N. a (self) purposeful failure
N. self-idiot who injures pride of self beings including oneself
(n)Dude, peeing on that electric fence was a total slef.
(v)My mother sleffed herself by pretending to stub her toe in front of dad..