The most common and most likely answer to this crossword clue is the 6 letter word PRANKS
I've seen this crossword clue in The Daily Telegraph
P
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A
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More clues leading to the result PRANKS
Buddy explains!

The straight part
We know that "practical jokes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case practical jokes = pranks.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PRANKS mean?
PRANKS noun- A practical joke or mischievous trick.
- An evil deed; a malicious trick, an act of cruel deception.
- To perform a practical joke on; to trick.
- To call someone's phone and promptly hang up
- To adorn in a showy manner; to dress or equip ostentatiously.
- To make ostentatious show.