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1.
1) an outburst.

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 1:'Yo wep!'
person 2: 'Cameron's here.'

person 1:'Yo wep!'
person 2: 'What?!'
person 1:'Hey.'

person 1: 'So about what happened last nigh..'
person 2: 'Yo wep!'(turns and walks off.)
by wompwomp. January 05, 2010