These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Bruno Mars
Fridge Logic: In "Grenade", the singer calls his lover out because her eyes were open when they had their first kiss... which he couldn't have known unless his eyes were also open.