이여

O ...! Grand, old-fashioned address

It calls out to someone or something grandly, the way English uses O in hymns and speeches: young people, keep trying until the end; rise up, small business owners; let the earth be glad. Because it sounds so lofty, captions use it half-seriously for effect, as with the ones sighing over fate and over the old days. One line here is something else entirely, a regional sentence ending in the question about what someone is thinking.

Register: literary and rhetorical, often played for laughs