A Australian way of greeting a friend. It is always accompanied by a peace sign. It's a friendly way of greeting someone who will mutually send a "yoll" back (has to be accompanied by a peace sign or they're a traitor).
"Yoll" *peace sign*
"Yoll" *peace sign*
"Wanna come to the canteen with me?"
"Not really"
"I'll buy you a choccy milk"
"Ok let's go"