quirk [kwurk] 
–noun
A peculiarity of action, behavior, or personality; mannerism: She is full of strange quirks.
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1. I always turn the volume up or down in increments of 5.
2. I always check the inside of my cup before I fill it with a beverage.
3. I make up words on a regular basis.
4. I also make sound effects while doing certain activities...usually driving.
5. I don't open the blinds until my bed is made.
6. I eat one food item at a time and move onto the next.
7. I always proof-read my texts before I send them.
8. I never buy the same brand of mascara twice in a row.
9. I hog all the black jelly beans and purple lifesavers.
10. I always brush my teeth before I exercise.
11. I wear my retainer every night, without fail.