That depends if you want to get into trouble or not.
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do something funny
pull a prank on him
they drew on his face
Peter put a dead mouse on Mr. Dussel's bed as a prank.
With a high-waisted skirt, you tuck your shirt into your skirt. (Make sre the skirt is above your waist!) With a normal skirt I guess you would just pull it on to your hips?
you just pull it off
A fart machine in there desk
Give someone a swirly or wedgie
Put gum in his hair
Depends how old you are