[thenickdude]

More options to irritate the mind:

3:14 Pie time

4:20 Blaze it

11:11 Pocky time

[zeeZ]

3:13 on digital clocks without leading zero is the king of time.

[whoopdedo]

My grandfather would say "car wreck" when it was 10:10. (Tin-tin)

[k4rli]

7:10 (oil) as well although less common but actually leet unlike 420