It doesn't make sense.

I don't know where you saw the word but, as a slang and as an abbreviation of the meaning of "Hey, ride in", it was used by young people. For example, when a guy who is riding a nice car calls a girl on the street, it can be that way.

끝에 “뭐”라고 한 건 영문의 well, 정도의 표현으로 큰 의미 없어요.

평서문으로 “~지요” 또는 의문형으로 “~지요?”는 모두 종결어미 “~지”에 “요”가 결합된 표현이에요. 예를 들어 이렇게 사용할 수 있어요. Ex) 요새 바쁘지요? (요새 바쁘지?) = 바쁘지+요? 날씨 좋지요? (날씨 좋지?) = 좋지+요? 사진 잘 나왔지요? (사진 잘 나왔지?) = 나왔지+요? 위에 이문은 모두 평서문으로도 쓸 수 있고요.

I think it’s wrong spelling of “신고해, 외국인”, and it means that “will report. foreigner”

It means that "Isn’t it compossite photograph? I will report it to (police iffice).

It's a person's name.

How about this; "I can't help my love handle when I sit down." The word you wrote looks fine but apparently Korean doesn't understand what you are going to say because there’s no mention about fat or belly.