Mine, definitely, is that I simply cannot stand eating the crusts of bread.
Even as I lift my sandwich out of its wrapping, if I so much as imagine having a big mouthful of crust, I delicately gag at the thought.
Rest of bread - fine, crusts, no go.
And I'm not even vaguely queasy or sick, I just cannot bear the thought of the crust in my mouth.
That's pretty odd right?