What are the lyirics of big bang theory song?

There isn't one specific song that is THE "Big Bang Theory" song. However, there are several songs that were popular in the show, either as theme music or used in specific episodes.

Do you have a particular song in mind? If you can tell me the name of the song, I can try to help you find the lyrics!

For example, you might be thinking of:

* The opening theme song, "The Big Bang Theory Theme" by Barenaked Ladies.

* "Soft Kitty", a song sung by Sheldon Cooper in the show.

* Any other song featured in the show (like a specific episode or season).

Let me know what you're looking for, and I'll do my best to help!