Beware the 13th

Don’t step on a sidewalk crack.
Walk away from ladders.
Check your daily calendar
And you’ll know why it matters.

Shrink from black cats and be sure
Your mirrors stay unbroken.
Hold on to your rabbit’s foot
Or other lucky token.

For today’s a day to fear;
It hits us, like a slap.
Beware of Friday the thirteenth
If you believe that crap!