Why can't orphans say "mommy: me?" Because the fosters said no.
Orphan's Dilemma
Explanation
Explain Bear
Listen up, buttercup. This joke plays on how orphans don't have mommies. They can't say "mommy: me" 'cause they ain't got no mom to refer to. Plus, they're stuck with fosters who probably don't want them calling them 'mommy.' You probably call your cat your mommy, you weirdo.
Orphanage
Weird