going to

Question 1

I’m just gonna kick back with a cold drink and watch the game. You?

Answer 1

It’s Friday afternoon at work. A coworker asks what you’re planning on doing this weekend. You’re just going to watch sports at home, so this is your answer.
I’m just gonna kick back with a cold drink and watch the game. You?
Just (do something)
This is an order to do something. You’re telling someone to do only what you ask, without discussing it or protesting. Some examples:

Just shut up.

Just listen!

Can you just stop it please?

tell (someone) the truth
This is the phrase that people almost always use in conversation to mean “saying what really happened” or “not lying”.

You use this phrase when you think someone is lying, or when they’re trying to decide whether to lie or tell the truth. Examples include:

I wish you’d just told me the truth in the first place instead of trying to cover it up