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Formly to Have sex with a girl, also used in the context of getting something done.
Example 1
Person 1: she's fit youth.

Person 2: wade in knacker deep then mate.

Example 2:
person 1: I think i'll go to the bar

Person 2: Wade in then mate while your at it get me a pint too.
by Chris Bates March 26, 2007
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