8 guys in my flight at basic got crabs when trying on uniforms (has to be done before they issue you your initial set). All the inconvenience with none of the fun that precedes it.
Nothing worse than getting an STD than getting it without the S.
Anyone that nails a military gal on the first date is pretty much guaranteed to have hit one of the "one in ten"... but you don't really care much at that age.
MiniD
P.S. I know that crabs aren't technically a disease... but they're right up there in ranking of STDs.