Men are From Where?

I had a very enlightening discussion with my family this past Friday night.
First, let's set the stage: there were four of us at the meal, not including my parents. MP, myself, LT (little tzadik'l, who is anything but little), and LMM. My father was engrossed in a Sefer or something, which, conversationally left LT the only male at the table.
He was telling us women a story that happened the previous summer in camp. Basically, without going into too many of the boring details, some guy in camp made up a nickname for one of the janitors. Not that it was a brilliant nickname, but this boy decided to confide in another janitor, and tell him that the guys were calling the first janitor "it". It turned out to be a bad move, as janitor number two goes and tells "it" about his nickname. When "it" found out, he went and hunted the little bucher'l down, and beat him up.
That was basically the end of the story, and by the time he had reached it, LT was in stitches. He could barely choke the words out, amidst hysterical laughter. He looked over at us, his very own sisters, and his very own mother in shock. Why weren't we laughing? This was probably, to guys, the single funniest event of their summer.
Then, the conversation went on, and suddenly, LT was discussing swirlies. For the females reading this, who are reacting as we did, ("huh?") a swirlie is when you stick another guy's head in the toilet bowl and flush.
If your reaction is one of horror, please know you are in very esteemed company. MP was completely horrified at the thought of this. Personally, I was chocking over my Diet Dr Pepper, and couldn't stop laughing long enough to formulate an opinion on the matter.
So the conversation went on, and we all had lots of questions. Had LT ever been swirlied? And had he swirlied any other guys? How does it work?
It was in complete wonderment that the females at that table listened as LT promised that he'd never been swirlied, and that he had only given another guy swirlies once, and that there is a particular toilet in his yeshivah dorm that is especially suitable for swirlies. When we had finally managed to close our mouths, my mother commented. "Its times like this that I wonder why we don't say shelo asani ish."
Then LMM, my lil sis, turned to MP and myself, with horror written on her face, saying "and you two want to MARRY one of those?"
MP was busy wondering what people think of LT when he does things like that, and I started to plan my blog post. ;-)

Men and women are completely opposite. Men don't find the same things funny as us women do. Women don't consider stuffing their friend's head into a toilet bowl an appropriate display of friendship. Men don't see why a woman would need five pairs or shoes, crocs, Chinese slipper, and 'regular' slippers an appropriate way to pack for a week long trip. On the other hand, women don't understand the logistics of eating a lethal combination of beans and barley at ungodly hours. And men don't get why a woman would care about things like 'mauve' and 'Burgundy' and 'lavender'.

But then as one person put it, so succinctly, "Men are from earth, women are from earth. Get over it." While we are total opposites, we have to date, with the goal of living harmoniously for the rest of our lives. Isn't that hard? Honestly, I'm not in the position to speak about this topic, as firsthand dating experience is not something I have mug of. But how does a man and a woman even find topics of common interest? Men don't want to hear about your shopping excursions, and women don't want to hear about their run-ins with janitors, especially not those that ended with blood and a cast.
What is there then? How do people do it?