2. A cup of milk tea, which girls can't finish, can be taken away for easy drinking at any time. The boy who drinks milk tea is drinking milk tea, slurping ... After drinking a few mouthfuls, the cup is thrown away. So you are more likely to see girls holding milk tea cups than boys holding milk tea cups. So, I left you the impression that boys seldom drink milk tea.
Boys are much more impulsive and casual than girls in eating and drinking. Boys and girls will want a cup of milk tea when the probability of meeting a milk tea shop is different, and girls will want to drink milk tea when there is no milk tea shop nearby.