The most common and most likely answer to this crossword clue is the 6 letter word SPOOFS
I've seen this crossword clue in The Times
S
P
O
O
F
S
Buddy explains!

The straight part
We know that "pranks" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pranks = spoofs.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 SPOOFS mean?
SPOOFS noun- An act of deception; a hoax; a joking prank.
- A light parody.
- A drinking game in which players hold up to three (or another specified number of) coins hidden in a fist and attempt to guess the total number of coins held.
- Nonsense.
- To gently satirize.
- To deceive.
- To falsify.
- To ejaculate, to come.