1) "
Changer" (pronounced "shaynjaa") is an expression widely used in east-germany (mainly
Saxony) by teens which are really really really (and I can not stress this out enough) really bored. It is mainly used when just anything around the user changes, and since everything is relative, as Einstein said, everything changes all the time, thus this expression can be used all the time. It is preferable, however, using it when something noticeable changes, not when something
unimportant changes (see example