That's because something is actively listening on your conversation or your phone's location. Happened to my sister when she was talking about a fancy shitter and shitter ads start to pop up on her FB.
As for India, you will find it shitting in the open very common because they got no sewage system. There was a photo of a Chinese kid pissing into a trash can right in the middle of a mall in Richmond, BC a few years back. There was a story about how mainland Chinese visitors were shitting in the sink in HK Disneyland during Golden Week holiday like a decade ago.
