Facebook Delay
The time period one allows when someone has written on one's wall, sent one a message or otherwise been facebook-acted upon. This is a tool used to hide the true amount of time someone has spent on Facebook, so as not to appear as one who has nothing better to do.
Guy 1: So this really hot chick I met last night friended me and wrote on my wall, so I wrote back.
Guy 2: I hope you allowed for a Facebook Delay so she knows you're not a huge loser.
Guy 2: I hope you allowed for a Facebook Delay so she knows you're not a huge loser.