When someone is on Facebook while hyper, usually from sugar or caffeine. This person will post, message and comment much more than usual during this state.
"Sorry for all the messages last night, I downed an entire coffee and was Facebook hyper."
A "Hyper-Nonce" is someone that is extremely cringe worthy and actually thinks they're cool for said action
I.e. Liverpool fan on twitter
State of this lad... Absolute Hyper-Nonce him!
What are you doing you absolute hyper nonce