Degausser

[Little_Girl]

Popularized by the recording group Brand New, the term degausser refers to a device that degausses, or removes the magnetic field from an item. The term can be broken down for better clarity:
[Gauss] - a unit of measure of magnetic field intensity
to [degauss] - to remove [magnetism] an item
degausser - device that removes magnetism from said item
In the song with the same title, degausser is used in a metaphorical sense to describe a person that steals anothers magnetic field, rendering him or her useless.