The act of Facebooking while sleeping, similar to sleepwalking.
Dude i'm pretty sure I was sleepbooking last night, i liked your status at 4:30 a.m.
by getnrealnwv May 13, 2010
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to Facebook instead of sleep even though your eyes are heavy and you will most likely fall asleep with your phone on your chest with the Facebook app open.
L:Why are you posting on fb rather than taking that nap you told me you were taking?
T:I'm sleepbooking
by Misstracid August 2, 2015
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The act of facebooking or going on facebook while in a sleep-like state, drunk, extremely tired, or delusional.

Also a common disorder of stalkers and teenage girls who constantly change their facebook status from "single" to "its complicated" to "in a relationship" to "married" within minutes.

Can also refer to someone who is on facebook way too late at night.
"Man, I woke up this morning and I was sleepbooking sleep-booking sleep booking bumper stickers all day...it was great."

"Woah man...stop sleepbooking sleep-booking sleep booking the day before the SAT...your a retard."

"Don't you hate it when teenage girls keep sleepbooking sleep-booking sleep booking their relationship status all freakin' day!"
"Yes."
by Herbi January 19, 2009
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