Kick ass and take names; a wild bantha chase; catch sb off b

kick ass and take :
Most likely originated in the armed services, probably during Vietnam. "Kick ass" is generically applied to beating the opponent, whereas taking names refers to killing the enemy, or "taking their names." Has been adopted into common usage as a general motivational statement.
好像Obama对布什那样
a wild bantha chase:(wild goose chase)
The phrase wild bantha chase was a slang phrase used during the time of the Galactic Republic to describe an activity that diverted from the desired objective. During the search for General Grievous, Obi-Wan Kenobi used the term when speaking to Anakin Skywalker about his mission to Utapau. The mission ultimately transpired to indeed be a wild bantha chase, set up by Palpatine to ensure Obi-Wan could not interfere with his seduction of Skywalker to the dark side of the Force.
a lengthy or useless pursuit or task whose execution requires inordinate resources and circuitous execution
一个漫长的或无用的追求/执行任务需要过多的资源
catch sb(somebody) off balance:
1 to make sb/sth unsteady and in danger of falling
* I was thrown off balance by the sudden gust of wind.
让人失去平衡/跌到
2 to make sb surprised and no longer calm
* The senator was clearly caught off balance by the unexpected question.
让人惊讶/不能平静下来