Apropos to Goldy’s post below (from XKCD):
The Breast Bomb
Breast implants. Two LARGE volumes of saline solution. Easily modified before flight by injection of whatever what wants.
In flight, the implants could be made to connect to each other by implanting a shunt that could only be found by mammography.
BTW, similar implants have been placed in mens arses for those who think the Air Marshals could watch out for busty women with Arabic accents.
Why not combine Goldy and #1′s idea?
I suggest… The Fembot!!!
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