to walk on eggshells
Depois da briga, estou pisando em ovos perto dela.
After the fight, I'm walking on eggshells around her.
The expression draws on the fragility of eggs. To picture someone trying to walk across a floor strewn with eggs is to picture the most careful, hesitant steps imaginable — the slightest clumsiness and everything breaks. From that vivid image comes the sense of acting with extreme caution in a delicate situation.
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