Espresso shot as vibe is a 2024 TikTok phrase describing a high-energy, intense personality, inspired by Sabrina Carpenter's song Espresso. "She's an espresso shot" = she's electric. Not concerning, just personality vocabulary. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.