Top definition
The act of prepurchasing a Harry Potter book, or buying it at the midnight sale, Quickly skimming through the book to the end and then slowly driving through the parking lot where hundreds of other Potter fans are waiting to by the book and Shouting out the ending and key plot revelations at the crowd, thus ruining the book for everyone.
The guys who do the Harry Potter driveby are real douchebags, but those Youtube clips sure are funny.
by 07079 January 27, 2009
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