Still, Elena will appreciate the answer from the MC because she is in love with JB who put the jacket on her just before. Elena said in the conversation so Tommy should treat Heather better and Heather's will. So why is Elena laughing at the other answer? Because the MC is just as much of a jerk as Tommy.
Besides, it wasn't just words, it was action. He openly went against Tommy's conviction and opinion. Again JB didn't do that in the whole game.
It's not a jerk move as i see this situation. Heather made a "drama queen" scene over something as small as a jacket and used other people (JB and MC) to make her position look stronger and better in front of Tommy. MC does not fall for her provocations and releases a joke that broke her game. Of course she was offended and called Tommy and MC pigs, but I think that this is her temperament. And most likely she loves bad boys, otherwise she met not with Tommy, but for example with Jamie, Jacob or someone like them.
To summarize, I see the situation like this:
DIK-response "go get it, it's in my room" - defuse the situation with a funny joke, everyone laughs, Heather's manipulation is broken. Tremolo looks like a winner.
The Neutral "don't get me involved" response is the most sensible and grown-up, but Heather makes you feel uncomfortable by calling you "NOT A MAN". Although this is a smart answer, Tremolo looks humiliated.
The CHICK response "Of course I'd bring a jacket" is the response of a man who wants to look like a well-mannered gentleman, but has just succumbed to Heather's manipulation and allowed her to dominate. She won.
In general, in this whole situation (personal opinion) I sympathize more with Tommy. Not only does he have to put up with this circus every day, they also humiliate him publicly in front of the rest. Of course, as a couple they have a comedic effect in the game, but it would be better for them to break. They do not fit together - two impulsive choleric.