What is the English term for lol omg?

There isn't a single English term that directly translates "lol omg" as a phrase. However, you could use these options depending on the context:

For humor and surprise:

* Wow, that's funny!

* I can't believe it!

* That's hilarious!

* Oh my goodness!

For excitement and disbelief:

* That's amazing!

* Unbelievable!

* You're kidding me!

Ultimately, the best way to convey "lol omg" depends on the specific situation and the intended tone.