What does "practical joke" mean?

A playful trick done for amusement to the detriment of someone else.

What is a synonym for "practical joke"?

Common synonyms include: prank, antic, caper, frolic, gag, hoaxes.

noun

noun ·Rare ·Advanced level

Noun

1
A playful trick done for amusement to the detriment of someone else.
"The class put a whoopee cushion on the teacher's chair as a practical joke."
2
a prank or trick played on a person (especially one intended to make the victim appear foolish) wordnet

"The class put a whoopee cushion on the teacher's chair as a practical joke."