Originally posted by LikeASong:It's absolutely a PopMart era song. It wasn't played until the Popmart Tour, and besides the 360 Tour, Popmart was the only concerts in which it was played. Therefore, it's more a Popmart era song than anything else. Of course it's a Zoo TV-soungind and looking song, but it's intimally attached to the Popmart tour. Hence the Pop consideration.
Arguement for Zooropa-era: HMTHKMKM is a Zooropa outtake.
Arguement for Pop-era: So are WUDM and IYWTVD - I believe it was those two.