an ecstasy flashback..
I wasn't aware of that as a possibilty.
However, I have experienced a full blown Liberty Cap flashback as a passenger in my Dad's car with The Wall playing on the stereo. The flashback was over all too quickly but it was quite something to have my perceptions of sound and space altered so profoundly completely unexpectedly and out of the blue. Fortunately this did not happen in the middle of any conversation, things might have become quite complicated if that had happened. 8(
Here's one that any fan of hip-hop/rap in any slight way will appreciate:
No Apologies
I was 15 years out in my guess at its release date...
Talk about flash backs: I've had one to the electronic version of Layla.