Why does an orphan wanna be a criminal?
Because they wanna be wanted.
Orphan's Desire
Explanation
This is a wordplay joke. The humor comes from the double meaning of the word 'wanted.' Orphans are literally 'not wanted' since they lack parents, but criminals are 'wanted' by the law. The joke creates a humorous connection between the two meanings, suggesting the orphan seeks a different kind of 'wantedness'.