2) something you just shout out to get attention or to distract someone.
3) to create confusion for you to escape an awkward situation/conversation.
person 2: 'Cameron's here.'
person 1:'Yo wep!'
person 2: 'What?!'
person 1: 'So about what happened last nigh..'
person 2: 'Yo wep!'(turns and walks off.)