お()年(とし)寄(よ)り() otoshiyoriを oからかって karakatteは waいけません ikemasen。 You must not make fun of the elderly. Literal Elderly [object-を] tease [prohibition-てはいけません]. ~てはいけません is the standard polite prohibition: 'you must not do X.' Stronger than ~ないでください (which merely requests). お年寄り is the warm, respectful term for elderly people. etiquette~てはいけない (must not)
お()年(とし)寄(よ)り() otoshiyoriを oからかって karakatteは waいけません ikemasen。 You must not make fun of the elderly. Literal Elderly [object-を] tease [prohibition-てはいけません]. ~てはいけません is the standard polite prohibition: 'you must not do X.' Stronger than ~ないでください (which merely requests). お年寄り is the warm, respectful term for elderly people. etiquette~てはいけない (must not)