the act of standing behind a sitting person in order to look at the contents of their computer or cell phone.
considered extremely rude and annoying by most of society
usually committed by parents
or other nosy
"Sorry for not responding to that text message
for so long, my dad was trying to shoulder surf me"
Person 1: -is texting friend about a party at his house friday night-
Person 2: -looks over shoulder of person 1- "Hey man, can i come to your party"
Person 1: "DUDE, QUIT SHOULDER SURFING ME"