annoying

Yeah, rain is kind of annoying.

Something 'annoying' causes you to be bothered or irritated. Notice the following:

1. It's really annoying that my sister always borrows my clothes without asking.
2. The most annoying thing that he does is arrive late for everything.
   

combination

The combination of rain plus humidity plus hot, I don't like it.

When two or more things are put together at the same time, they create a 'combination.' Notice the following:

1. It's the combination of the cold and the darkness that makes winter hard for some people.
   
2. The combination of the sweet and the spicy is really delicious.
   

flip-flops

You're wearing flip-flops

'Flip-flops' are sandals that have a piece of plastic that goes between your big toe and your second toe.  Notice the following:

1. Where did you get those flip-flops? They are so cute.
   
2. I spent about a year wearing nothing but flip-flops when I lived near the beach.
   

and another thing

And another thing that bores me a little is constant rain.

When you want to add another item to a list, you can use the phrase 'and another thing.' Notice the following:

1. And another thing that she said was that the classes I am taking are really difficult.
   
2. And another thing, will you stop wearing your shoes in the house?
   

exactly

Exactly. I have the same problem.

Here, 'exactly' is used to show agreement or that you understand with what someone is saying. Notice the following:

1. Exactly. He still does those things even though he knows that it will make me angry.
   
2. Exactly. I was just thinking that.