Natalie Avon writes in Popular Science that between 1995 and 2008, 82% of people in the US killed by lightning were male. The experts that she consulted agreed that this was due to behavioral, rather than biological factors:
http://www.popsci.com/scitech/article/2009-09/are-men-or-women-more-likely-be-hit-lightning
Image: flickr user Kevin Miller, used under Creative Commons license.
Peter Todd, a behavioral psychologist at Indiana University, suspects the difference between the sexes boils down to the basic risk-versus-reward systems that have been part of our biological wiring for thousands of years. For women, Todd explains, the priorities are to protect one’s reproductive role and to care for offspring, which outweighs any inclination to attract potential mates by exhibiting bold behavior.
But for men, Todd says, the risk of getting struck by lightning could be outweighed by the reward of proving to other men—and potential female mates—that they’re not afraid of getting struck by lightning. This is particularly true for young men, who have the most to gain by impressing others, thereby raising their status as attractive, daring, healthy mates in the dating pool. And then, zap!
http://www.popsci.com/scitech/article/2009-09/are-men-or-women-more-likely-be-hit-lightning
Image: flickr user Kevin Miller, used under Creative Commons license.
Men are also more likely to have as their last words: "Hold my beer and watch this!"
Its a guy thing.