When your palm itches, you will receive money.
When I jiggle my leg, a Japanese friend tells me I won't get any money.
(The latter occurs more often than the former.)
When your ears burn, someone's talking about you.
When my ears burn, it's because I'm drinking red wine.
(The former occurs more often than the latter.)
So what does it mean when...
A moth goes down the back of your blouse?