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“In dog years, I’m dead” is a humorous way of saying someone feels ancient, even if they’re not actually that old. The joke comes from the idea that one human year equals about seven dog years, so a perfectly ordinary age can suddenly sound alarmingly prehistoric. Someone might say, “I just turned 35— in dog years, I’ve been gone for years,” usually after making a strange noise while standing up, forgetting why they walked into a room, or needing a full day to recover from staying up past midnight. It’s a playful exaggeration that pokes fun at aging, reminding us that while the calendar keeps moving forward, a good sense of humor can make even being “dead in dog years” feel pretty lively.