Slang/Idioms: go on, go down

Something weird is going on. Something weird is going down.

Here, both go on and go down mean happen. (Something weird is happening.)

A common casual greeting in English is "hey, what's going on?" or "hey, what's going down?" It's like saying "what's happening?" or "what's new (in your life)?"

If you come into a room, and your friends are looking angry, you could ask 'what's going on?' to learn more about the situation.

'Go down' is much more casual and slangy. 'Go on' is still casual, but is very widely used.

So what's going on in your life right now? Anything good going on? ^_^