English Slang collection：

　　crumb bum

　　[释] someone who acts completely like a fool;

　　[例] Would you please stop being a crumb bum in public? Everybody's looking at us.;

　　crummy

　　[释] something really small and quite pathetic;

　　[例] The show in the bar last night was really crummy!

　　crunch numbers

　　[释] to do math, calculation;

　　[例] Accountants usually have to crunch plenty of numbers by the end of each year.;

　　crunch time

　　[释] a deadline/the last minute;

　　[例] It's getting pretty close to crunch time, better finish that report soon.

　　crunchy

　　[释] exhausted, not well;

　　[例] I think I need to see a doctor as I've been feeling crunchy since this morning.;

　　crunchy

　　[释] to feel embarrassed after having done or said something bad;

　　[例] I feel crunchy for yelling at Michael on the phone.