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1.
Verb. A portmanteau of 'facebook' and 'poo'.

A term used to describe checking facebook (or other social network sites) while sitting on the toilet, most commonly with a laptop.
Facebook Status Update: 'Woke up late this morning, having a quick facepoo before work.'

Steve: 'Hey man I tried calling you?'
Dom: 'Sorry, I was having a crafty facepoo and couldn't reach my phone.'
by E Burroughs August 15, 2010