It is very important to scream and shout. This is no time to be
shy. The screaming will :
Draw the attention of other passengers, who will become court
eyewitnesses, or evey come to your aid
and hence frighten away the old uncle. He is afraid that other men
will come to your aid. Predatory uncles like to prey on timid
girls. They will test the waters to see whether the girl is
timid.
Unfortunately, 99% of the girls are too timid and will not dare to
scream as they feel very embarrassed.