The most common and most likely answer to this crossword clue is the 4 plus 2 letter word COME ON
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More clues leading to the result COME ON
Buddy explains!

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 COME ON mean?
COME ON noun- Something intended to attract, as in an advertisement.
- A statement or sometimes action reflecting sexual or romantic interest.
- A bad actor whose talents do not extend far beyond walking onto the stage.