Jan 25th. flying colors, bite off more than you can chew

1. You always pass the tests with "flying colors", but I'm the one whose going to "bomb" it.

flying colors : complete success
bomb : fail or do poorly on


2. She thought she could handle five difficult classes, but she now realizes she probably "bite off more than she could chew".

bite off more than you can chew : take on more work or responsibilities than you can accomplish emotionally or physically