English Slang collection：

　　ace boon coon

　　[释] a best friend;

　　[例] As his ace boon coon, Tim knows Jack better than anyone else .;

　　[拓] ace boon coon;

　　ace in the hole

　　[释] a secret advantage;

　　[例] He's going to be re-elected for another term of office. He's got an ace in the hole.

　　aces

　　[释] adj. great;

　　[例] These fronts seats to the super bowl are aces.;

　　ace up one's sleeve = ace card = ace in the hold

　　[释] a secret advantage(手握);

　　[例] He won the competition in the end as a black horse. Did he have an ace up his sleeve?

　　acid freak = acid head

　　[释] drug user，drug addicts;

　　[例] More clinics for drug addicts may help, but it doesn't go to the heart of the problem.;

　　a couple beers short of a six-pack

　　[释] alternate way of calling sb stupid;

　　[例] Oh..man! You're a couple...

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