I get bothered when a time for an event or something is not on a minute frame that is divisible by 5. 00, :05, :10, etc.). If someone schedules something for like 2:17 or something it bugs me. Actually, the number divisible by 5 thing applies for a lot of things. Volume on my TV if a number is shown, time for cooking food in the microwave, blahblahblah. 5 isn't even my favorite number. I just function on increments of 5. I get ridiculously mad at Toddlers and Tiaras. Like not even one thing in particular, just turning on the show gets me annoyed.