Top Definition
A guy who covertly steals womans underwear off the clothesline for his sexual pleasure and "usually" has been found out ..Similar to the "Snowdropper"
Mark:Hey Peter did you hear mad Davie's been doing his rounds again last night ..?
Peter:Who the knickerknocker ..?
Mark:"laughter" Aye the very one ...
by UCMEIN3D May 02, 2007

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