I can't wait to try this on my cat to see if the reason she never moves when I tell her to in English is because she has only been speaking Indonesian all this time.
May be on a slightly different context: "Sorry, please don't sit on me" :-)
Kalian is plural so there is obviously more than one person sitting on me. This sentence will be used very often im sure. Lol
the english sentence is very weird - they didn't see you, so they are now sitting on you? i can't imagine a situation like this with normal people - perhaps of children, pets, or persons with visual difficulties?