farsela addosso

to wet oneself; figuratively, to be extremely frightened

→ fare
phrase Rare #39,131
to wet oneself; figuratively, to be extremely frightened Informal expression. The figurative sense is similar to “to be scared stiff.”
IT: È facile farsela addosso dalla paura guardando quel film.
EN: It’s easy to be scared stiff watching that movie.