Or if a man says something to a woman at work and she takes it the wrong way, another lawsuit.
Perhaps that is a cultural problem. I have, in my career, never shunned perverted jokes, sexual innuendos, compliments ("sexy dress today, Jane"), etc. The worst I had was a little talk because on one I made a girl turn totally red and she complained to her superior (Blowjob joke, but damn, if you're kneeling in front of a coworker you're deserving that.). I merely, got a little stern talk about behaving a bit better -not around women- but around uptight PriceWaterHouseCooper consultants.
I have a cute dataminer sitting next to me at work, the rest of us are neckbeard developers and/or sysadmins. Male-jokes get made and she just laughs with us. It is not a problem. Now, it were different, if I'd be touching her inappropriately, but I'm not and I wouldn't want to.
Other example, my sister is a roadie/sound-engineer. That is pretty much a physical job and she is the only female. She handles well and her nickname is "pittbull". A women in these jobs just has to take up the culture, because it's just that: a culture and it's not against women, it's just in good fun. So, yes, she gets teased that she'll be sent in a pink dress to the client to make better sales, but she quips back hard and everything is in good fun.
Sueing? So North-American. Try "forgiving" and "adapting".