get something out of your system
US /ɡɛt ˈsʌmθɪŋ aʊt əv jʊər ˈsɪstəm/
UK /ɡɛt ˈsʌmθɪŋ aʊt əv jʊər ˈsɪstəm/

1.
發洩出來, 消除
to do something that you have wanted to do for a long time and then stop doing it, or to express strong feelings that you have had for a long time
:
•
I had to scream and shout to get it out of my system.
我不得不尖叫和喊叫來發洩出來。
•
He decided to travel the world to get the wanderlust out of his system.
他決定環遊世界,以消除他的旅行癖。