1> Sometime before we friends had gone out. Probably for having dinner only. I was very bored and so was my other friends. And idea came in my mind. I shared it with all of them. It was something like this: After reaching to room we all will do one thing. We will start blaming each other. For anything and everything. It does not matter it is related or unrelated.
It is too hot outside, just catch anyone and start blaming him for that heat. Water is not clean, start blaming someone for making it dirty. Food is not good, say that it is because of you it is not good. For literally anything and everything -Low account balance, no program coming on TV, internet is slow, low mobile battery.
2> Talk with your south Indian roommate in Gujarati. And tell him to speak in his mother tongue. Have breakfast together and tell about that breakfast in Gujarati. And also ask him to reply in his mother tongue. Interpret it at your level best and answer him.
Watch some third language movie together and discuss about it. For example, watch Spanish movie. You say whatever you had seen in Gujarati and ask him to speak in his mother tongue.
3> Go to near by shop or company's cafeteria in morning with cup of tea in hand. And ask him, થેપલા છે? If he says 'what???' Just walk out from there, and show him your frustrations and disappointments by waving your hands in air etc etc.