Why can't orphans watch PG movies? Because they are parental guidance.
Orphans and PG Movies
Explanation
This is a pun that uses the phrase "parental guidance" in a humorous way. The joke plays on the fact that orphans don't have parents and that PG movies are not meant to be seen without them, thus linking 'parental' and 'orphan' in a funny way.
Matilda
That is so mean I hate this
random person
Lol
Cam
That’s so mean, do it again
mangomelon42
i thought it was parent/guardian