Related Clues:

• Curiosity
• Quirk
• Deviation
• Odd occurrence
• '___ drink Pepsi, but ah'll have a Coke few don't mind'
• Marvel
• Irregularity
• Three-legged calf, e.g.
• Peculiar situation
• Eccentricity
• Peculiarity
• Three-legged calf, for one
• Freak
• It's not the norm
• Departure from the norm