Having OCD or simply silly habits at times can be annoying. I'm used to doing things thrice -- like when brushing my teeth (surprisingly no brilliantly white teeth, perhaps too much coffee). In general, I find myself doing random things three times unconsciously. It seems that all my life is on a 3/3 tempo.
Weirdly enough, when it comes to music, I can only think in a 4/4 tempo even if it's over 160 bpm.