Oh, I didn't realize you were asking. Unfortunately, can't help you there since I don't fully grasp the meaning of the word "междусобойчик". From what people explained to me in the other group, it's a context rather than an event. With inside humor and such.
я сама говорю "поменяла ум" (I changed my mind)
Это ничего, мне Оля говорила "поменять" ребенка, каждый раз когда из дайпера попахивало.
Александр, long time no see.
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Хочу лето (или нормальную зиму)