Is this expression used a lot?
Native speaker’s answer
Rebecca
Yes, this informal expression is commonly used. A "blast from the past" is a reminder of a person, thing, or event from the past that has evoked feelings of nostalgia. For example, the speaker is going through his old belongings, which is a "blast from the past." Ex: We spent the weekend watching old cartoons from our childhood. What a blast from the past. Ex: Look at that vintage car! Blast from the past.