I can accept social drinking, but when the boy loses control of body functions (puking, involuntary peeing) or is unable to have sex with me, that's too much!
I can observe this phenomenon (not eating all food) in Farang friends as well. I was eating Khao Man Gai with an Irish friend, and he didn't want the chicken skin, the vegetables in the soup (!!!) and left half of the soup and some rice. After eating his leftovers, I lectured him about the Great Famine. Maybe I should post some articles about starving children in Africa to bring people to their mind?
Pee standing* (no matter if the toilet seat is lifted or not). In a hotel room it’s no problem for me, but in my bathroom I will have to clean it. Other uncivilized behavior like not washing hands after toilet or not finding light switch for bathroom and peeing onto the bathroom floor from the door, with part of it going on the door sill and balcony (boy Ice from Saranrom park 2013).
*in the toilet bowl. In the wash basin, no problem, I do so myself (saves a lot of time because you don't have to open belt and pull down your pants and sit down), and rinse afterwards. When doing so elsewhere, check first if the wash basin is connected to sewer, sometimes tubing is missing and effluent water goes straight on the floor and then to the drain.
Update: completely forgot "not being on time". My readers are invited to submit more. sunglasses