I posted about a taboo in daily life a month ago
Another taboo I was taught in my childhood was not to point gods, buddhic statues, graves, altar, everything sacred.
When you point one of these objects, we have magical gesture to do.
You ask someone cut your forefinger.
The person who is going to "cut" your finger lightly beats twice your forefinger by her/his forefinger. Then you cut off your defilement.