There is a bird called a Booby, which is very ungainly and awkward on land, consequently a person called a Booby means someone who is awkward and clumsy. These birds were trapped for food very easily by early sailors.  So a Booby trap is something something easily stepped into and triggered.

Bagginsbill, perfect explanation of what I'd said. Waywardsamurai had said that you were 'sick', and I'd hoped that you and others would recognize this 'youngism' as meaning that you were cool and not ill, or in the slang of my time (the 80's), perverted. But your explanation of the phrase I used was better than the one that I saw recently on Discover in a program called "Do you Speak American" which had a section on west coast slang (Valley Speak and Surfer Dude Speak).

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8