Animal Instinct

This Is what I found writen on our office's male washroom.

WHAT IS ANIMAL

INSTINCT?

Is the feeling of wanting to fuck your colleagues.

Well I almost felt like adding to the sick graffiti but think i'll leave it here. Here's my version;

WHAT IS ANIMAL
INSTINCT?

Is the feeling of wanting to write on the toilet door.

or

...?

Now I am wondering whose the sicko who go around jotting his tots at our washroom with a pencil?!?!?!!