How do I quote multiple users in one post?

[pichu_pichu]

The Ghost of RubangB said:
I'm stupid. What do I do?

I quote someone

then I open another tab in the same thread and quote someone else

The Ghost of RubangB said:

[quote=Valdens]I'm stupid. What do I do?[/quote]

Ah.

[quote=Rubang B]I'm stupid. What do I do?[/quote]

Hm.

 

I don't get it.

Select all > copy in the second tab

and paste it in the original quote.

try it