Мне наплевать на тех, кто сейчас занимает мое место.
This expression seems to bear all the hallmarks of an impersonal construction, so I wonder why the 3rd-person singular "наплюёт" is not used here....
Tебе и решать. === It's up to you (to decide).
While I understand the meaning of the expression, its grammatical construction eludes me. Or more specifically, some elements seem to be lacking as is:
According to my Russian learning book, short adjectives are formed by taking the root of the adjective and adding:
-ø for male (null ending)
-a for female
-o for neutral
Thus, the adjective красивый,...