I know some people might think 干 is not-so-mild, but I tend to hear it a lot in the sense of

Damn, all the way over there? That's a long way to go

or

That chick is hot, damn!

I know some people might think 干 is not-so-mild, but I tend to hear it a lot in the sense of

Damn, all the way over there? That's a long way to go
干！那么远的地方？走过去要很久

or

That chick is hot, damn!
那个正妹好辣，干！