To call yourself so that you can find your cell phone.
"Dude, dial my number, I need a self-phone cause I was drunk last night when I put my cell phone down."
by afichte May 22, 2008
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A phone I use to call myself. Play on word sound cell phone. (See cellph phone.)
That's my self phone. I use it to call myself.
by Phil Kelley February 16, 2005
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1) When your phone's autocorrect absolutely savages you.

2) When you are texting in bed and accidently drop your cellphone on your face.
"Yo, I want some dick

Some duck* ... Shit"

"Lmao, cell phone self own"
by F41R September 3, 2021
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