This so absolutely doesn't translate to our language 😆 We say a terrible rhyme:
Středa, je ho tam třeba.
Just translate it yourself.👀😆 

 Lol: Wednesday you need it there? 

I mean its not wrong but not imaginative 

 Him, not it.👀😆 It gives no space for imagination, it's literally only about sex. 

 Is it about a cat belonging to someone? 

 Dan, stop playing with me!😀 It's enough that our saying is vulgar itself!😃 

 Ok perplextiy finally got it for me. Leaves nothing to the imagination 

 I'm sorry, it's really terrible. But as for hump in hump day, it took the camel for me to understand the word😃😩