The most common and most likely answer to this crossword clue is the 4 plus 2 plus 9 letter word STAR OF BETHLEHEM
I've seen this crossword clue in The Times
S
T
A
R
O
F
B
E
T
H
L
E
H
E
M
More clues leading to the result STAR OF BETHLEHEM
Buddy explains!
The straight part
We know that "rarely found out of bed?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rarely found out of bed? = star of bethlehem.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.