Watch The Big Bang Theory Online: Season 9 Episode 18

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Should friends be business partners?

That was a big question on The Big Bang Theory Season 9 Episode 18 as Howard reconsidered entering a legal partnership with Leonard and Sheldon regarding their patent for the infinite resistance gyroscope.

The woman offer Raj dating advice after Emily reaches out to them following their break-up, but will he take their advice or follow on with his own?

Penny found herself in very hot water with Sheldon, but did she make it up to him?

Use the video above to watch The Big Bang Theory online to get caught up.

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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The Big Bang Theory Season 9 Episode 18 Quotes

Penny: Sheldon, did you draft the contract?
Sheldon: You bet I did.
Penny [to Amy]: You're gonna make out so hard tonight.

Is the fetus helping you? Because that's cheating.

Howard