Dear LFTP: the toilet-paper trail

• Did I miss a moral imperative by not telling a stranger about the toilet paper trailing from her slacks?

A listener watched a woman return from a restaurant restroom with toilet paper trailing from her slacks and joined 'the silent legion' rather than tell her. The hosts split: ignore it and spare her the mortification of a stranger's notice, or tell her directly (one suggests having his wife do it discreetly). They agree the ambiguity is the problem — either let it go or tell her. The secular answer (have the server pass her an anonymous note) is judged worse, since she'd spend the meal wondering who saw.