maching
How fast you’re going compared to how fast sound is. If you’re going Mach 1, you’re going about 717 miles an hour. If you’re going Mach 2, you’re basically a speed demon.
"He went Mach 2 and broke the sound barrier. I just went Mach 1 and broke my mom’s nose.", Tom, who’s not a speed demon
"Mach 2? I was going Mach 1 and my dog was going Mach 0.5.", Lisa, who’s not a speed demon either
"I got Mach 1 on my bike. My friend got Mach 2 on a skateboard. I got a broken leg.", Ryan, who’s a speed demon now