Things happened in my college, when I was a freshman, we have to show the exchanged students around our campus, soon, it's time to say goodbye, and we were gonna take photos, then, an idea came to my mind, I saw a beautiful girl, I said to her immediately, I wanna do it with u! But-- She was more than frightened, and turned to her mates, I was confused, why she was so allergic to my words. Later on, I gradually realised that "I wanna do it with u" means "I wanna have sex with u" or to put it directly, I wanna fuck u!