İğrenç ötesi!

i dont understand could you send me in private ??

It´s not rude! He/she is just quoting the name of the poster in the link you gave - which obviously amused him/her.

I think the first part means ´The similarity between petrol and people?´ but I´m not sure about ´sulusu çekılmez´ so won´t attempt it.

You have to know some colloquial Turkish to be able to understand this.

Direct translation: "What is the similarity of gas(petroleum) and people? Both are intolerable when watered down"

Sulu insan = "Person with water(lit.)" = obtrusive person who makes annoying jokes all the time.

(Terrible joke btw, so whoever wrote this has a good shot at being "sulu" himself )

I would never figure out this water part...only a turkish would be able...thanks