Top Definition
When a womens boobs are too big and get in the way of completing a task.
A women reached for her stapler, but her boobstacles knocked over her water bottle which spilled all over her desk.
by Brian Sorry April 30, 2008
a place where having large breasts gets in the way.
"I don't think I can fit in that roller coaster seat, it seems like the front bar would be a major boobstacle."
by Chris Aoyama December 19, 2007
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