Two cents in it

[Spencer]

Hi everyone,
Do you know that song?
This: blablablabla let me put my two cents in it.
Those girls, those Pussycat girls are singing it, I guess.
What do they mean?
Thanks
Spencer

[Yankee]

Hi Spencer

There's the idiom "my two cents worth" which basically means "my (humble) opinion".

So, here it sounds like "it" is a reference to a conversation and they want to be allowed to add their opinion in the conversation.

Just my two cents...

Amy

[Spencer]

Thank you, Amy,
So she sould've said:
"blablabla If you would be so nice and listen to me"
but it wouldn't rhyme with the rest.
See,I got it
Spencer