I thought about this and honestly the only time I think it's probably okay to broach the subject is if your sibling is swallowing tapeworms. (Heya, don't swallow tapeworms, it's pretty awful for you)
Other options:
no subject
I thought about this and honestly the only time I think it's probably okay to broach the subject is if your sibling is swallowing tapeworms. (Heya, don't swallow tapeworms, it's pretty awful for you)