That's an odd number of bad things, so it's bad luck. Had you been wearing odd colored socks, it would've been good luck.
if you don't believe in that stuff, nothing. if you do believe in that stuff, nothing.
A man falls from the ladder on the mirror (that's why it brakes). Cat licks his blood and police arrest you for bringing down the ladder.
A singularity is created and a new universe is born.
A black cat passed you while walking under a ladder and mirror broke.
Also the reason it's "bad luck" to walk under a ladder is in the old days when construction safety laws were....nonexistent, people would often be hit by falling tools, materials, or step on nails tacks, etc. as they walked under them.
Why do you hate black cats? ;)
You tell me. I don't believe in that crap but please... do tell.
nothing at all