Coach:

He is quick to cover your mouth, whisper shouting your name like a teacher to a naughty kid when all students have to be silently working. He will ask if you are trying to be a human pipe bomb, which makes you snicker more so he has to move quick to get you away from the zombies.

Rochelle:

She'll scold you but also try not to laugh since it's so contagious. So she tries to fix it, by either throwing something at you, kissing you, saying something serious, etc. Anything until you shut up. Later on she can laugh about it, but at the moment she just wants to shout for you to shut it.

Ellis:

Of course he also starts laughing then! So both laughing like idiots until GRRR! Then it's screaming and shooting all guns on you two like crazy as zombies come running to you two at such speed. So when one starts laughing you two get seperated to avoid alerting all zombies in the whole area.

Nick:

He's quick to cover your mouth or even just push something in there to shut you up, whispering in your ear of how you aren't gonna kill them by laughing and that it wasn't even that funny. As you calm down and make the little wheezing and snickering sounds he has to resist the big smile growing on his face and how he wants to coddle you now. He has to stay stern! Not reward this behaviour.