朋友叫我Don't have a cow，唔通佢係想叫我唔好養牛?
如果有人話你have a cow，其實唔係話你有隻牛，而係講緊你嘅心情好焦躁、好嬲或者好唔開心嘅意思！
"My mum had a cow when my brother told her that he blew all his pocket money on a new guitar."
"Yes there was a mouse on your desk, but it is out of our house now! Don' have a cow over it."
"Failing is also part of learning, so even you failed to accomplish your goal, it is always best to learn from it then have a cow over it."
失敗亦係學習嘅過程之一，與其have a cow over it，不如好好分析失敗原因再學下點樣改進！