How "significant" are your behaviors? Have you ever done anything that seemed normal at the time but now seems crazy? Most people have. It may have been something you did as a child or on a date in your teens. Maybe you did it on a dare or just thought it would be fun.
My normal might be your crazy, and vice versa. Ever skinny-dip? It's illegal in most parts of the U.S., and some would think you were crazy for exposing yourself like that. Of course, it doesn't have to be anything so obvious. If we looked in your refrigerator right now, would we find anything unusual? If you're a woman, do you think it's normal to have a closet full of shoes? If you're a man, do you think women are just plain crazy to have so many?
Drawing the line. What we wear, say, and do usually conforms to the norm for our community and the time of day. If it doesn't, people look at us as if we're crazy. For example, a bikini looks great on the beach, but wearing one on the street or at work would be inappropriate. Eating with your hands is appropriate on the beach, but you would look crazy doing that in a posh restaurant. Black, white, and pastel shades are popular car colors, but a white car with zebra stripes would stand out. Singing is appropriate in the shower but not in the stacks of a public library. And while it's okay to shout four-letter words if you stub your toe at home, people would stare at you if you did it in church or temple.
Adventuresome or crazy? Many people do potentially dangerous things that others think are crazy. They enjoy skydiving--jumping out of airplanes to parachute back to earth--or hang gliding--jumping off cliffs to fly via a kite-like wing and a few pounds of metal tubing. Spelunkers enjoy exploring underground caves, which are full of bats and bugs, muck, and bat poop (politely called guano). Mountain climbers train to climb to the top of high mountain peaks, despite bitter cold and a very real risk of frostbite, altitude sickness, or avalanche. Some water-skiers do it without skis, using their bare feet. In subzero winter, swimmers in Russia and Finland dig a hole in the ice and dive in. The czars swam in the river near their Winter Palace in Saint Petersburg. They had a hole dug in the ice, just for their personal use.
Some of these adventuresome people work hard to break records. Mountain climbers train to break records in height and speed. The land speed record for a car is 407.4 miles per hour in a jet-powered car. There are records even in skateboarding: 80.8 miles per hour, 242 miles in 24 hours, one jump that measured 79 feet long and 23.5 feet high. Those who are so dedicated to break a record often make that their life goal, and that seems crazy to others. Did Michelangelo's mother say, "Find something better to do than make such a mess with paints"? Did Shakespeare's mother tell him, "Enough with the writing; go get a real job"?