When the lights go out
And I'm in my bed
I think of all the madness in my head
All of the things that I did back then
When I'm in my bed
I think of all the memories I've had
All of the things I did back then

from T.I. (Ft. B.o.B, Kendrick Lamar & Kris Stephens) – Memories Back Then Lyrics on Rap Genius

Meaning

This track is about reminiscing about a girl or boy from your past. The song was originally called Somebody That I Used Know, after the Gotye hit, which the beat was supposed to sample (possibly with a chipmunked version of the chorus from the original).

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