The time our entire design class dressed up for Halloween as the design teacher (who notoriously almost only wore grey sweaters and always had a cafeteria coffee in hand).
I remember him walking down a super long empty hall and we all just turned the corner at the other end and started running towards him and he ran away yelling “FUcK YOU GUYS” and in retrospect I almost can’t believe he didn’t suffer a heart attack.
Pretty sure we won a pizza party for best costume that year.