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1 definition by Burnin up Brad

 
1.
Although originally from the auto-motive department, drop tank is used to describe a womans genetalia when she is wearing tight leggins.
Not to be confused with camel toe ,drop tank is just a bulging type pubic area and not the traditional bulge with a split.
"fuck,did you see the drop tank on that"
by Burnin up Brad December 05, 2007