Students

There is a little I understand.
Universities have distance learning through the computer, so students do not meet. So I was a little confused that there were comrade activities going on in the park. 
 An elderly student sprayed mayonnaise from a tube at the younger students lying on the ground making snow angels. And my husband assumed that due to the lack of snow, the other older student poured flour on the younger students.
Is this silly or not..................