The phrase "lighted up on" refers to the action of becoming animated, excited, or enthusiastic about a particular topic or situation. It signifies a sudden burst of energy or enthusiasm that often leads to one's demeanor becoming noticeably brighter and more engaged.
In essence, when someone "lights up on" something, it implies that they have found a subject of great interest or pleasure that ignites an emotional response within them. This could be due to the sheer joy they derive from the subject or their deep passion and knowledge about it.
When a person "lights up on" something, their facial expressions, body language, and overall demeanor tend to change. Their eyes may gleam with excitement or curiosity, their posture might become more upright, and they might actively engage in conversation or activities related to the topic at hand.
This phrase is commonly used to describe individuals who become noticeably more vibrant, enthusiastic, or animated when discussing a favorite hobby, exciting news, or when engaging in a stimulating conversation that sparks their interest. It often highlights the joy or pleasure they experience when encountering something that genuinely captures their attention and enthusiasm.
Overall, "lighting up on" something is a figurative expression that portrays the transformation of an individual's mood and demeanor as they become captivated, energized, and elated by a specific subject or circumstance.
