someone who is on instagram for EXTREMELY long amounts of time or never gets off instagram
"Robbie is such a instagramer he never gets off instagram"
"yeah all he does is sit on his ass and instagram all the time"
a facebooker is someone who never gets off facebook and/or stays off
for EXETREMLY long amounts of time
"yo robbie is such a facebooker all he ever does and sit there in class and do stuff on facebook"
"yeah he's such a facebooker