But for now we are young
Let us lay in the sun
And count every beautiful thing we can see

from Neutral Milk Hotel – In the Aeroplane Over the Sea Lyrics on Rap Genius

Meaning

Taken in conjunction with the first line, he’s saying that even if we die (and we will) we must enjoy and fulfill our lives the most we can, cherishing his moments left before death.

Though as Jeff did roll on MDMA when he wrote this song (detailed in the 33 1/3 book on the album), it could also be taken as a reference to drug use.

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