Proper use of siblings. My understanding is that siblings, though not often used, refers to brothers and sisters, but my question is whether I can include myself in this term. In norwegian this would be correct when using the word sÃ¸sken.
The definition of kryptonite is Superman's ultimate weakness, or anything that causes someone's ultimate weakness. An example of kryptonite is the one food a person is seriously allergic to. kryptonite
That's why he's a Superman. To me Kryptonite, being the title of the song in this case is a metaphor for the world/life/time > aging. It was Superman's great weakness and in this case, it's the aging process of life that will eventually turn this once young and fit guy into a weak and frail human being.