whopper

1. N-COUNT If you describe a lie as a whopper, you mean that it is very far from the truth. 弥天大谎[非正式]

...the biggest whopper the president told. ...总统撒的弥天大谎。

2. N-COUNT If you refer to something as a whopper, you mean that it is an unusually large example of the thing mentioned. 庞然大物[非正式]

As comets go, it is a whopper. 在彗星里，它可算是个庞然大物。