you pass the time on a driving trip by averaging the numbers on license plates. (Lisa C.)
most jokes you tell end with the punchline: "because it's prime!!" (ricardo2424)
you see the equation e^i(pi) = -1 and ponder it for six weeks straight. (ricardo2424)
you've told the "pie are square" joke.
you take astrophysics as a bird course.
you think anyone who doesn't work at home is abelian. (Laura)
you can calculate your whole teams' batting adverage instantly. (Shannon)
...your favorite football team was the Tennessee Eulers (before they changed their name, of course). (You have to be a math geek & know football to get this one.)
you use binomial expansion for grocery shopping. (Laura Cole)
you know what pi is beyond the first three digits. (Lee Anderson)
whenever you hear something happened at a certain date, you automatically subtract in your head to figure out how many years ago it was. (Lee Anderson)
when it's time to leave a tip, you always know what 15% of the bill is. (Lee Anderson)
listing all of the math classes you've taken makes people wince and shudder. (Lee Anderson)
you can't believe it when someone can't understand a concept as simple as trigonometric ratios. (Lee Anderson)
geometric proofs excite you. (Lee Anderson)
...you have memorized the first 10000 digits of pi... BACKWARDS.