muck-up day at school. unleashing frogs in the girls toliets, with the intent to scare others or cause someone else to be the butt of a
practical joke at the expense of
hilarious humour, this would be considered an act of stranta
alternatively
super-imposing someones face on an amusing picture, at the expense of
the person, invocing banter of a structed variety, again this would be considered stranta.