Originally posted by Caledonia:[..]
I'm fairly sure "Sixty-Nine" originated from the STS, Dublin 1990 / Hansa, Berlin 1991 sessions and was possibly the original working title for UTEOTW before it became UTEOTW, I remember reading the song title being mentioned in interviews from around the time too.
On the Hansa outtakes (which I think at least some was actually recorded in Dublin during 1990 prior going to Berlin) there are two takes of a song which I always called 'I Feel Free (69)' before Achtung dropped. Together with another longer take ('Don't Hide Away') - they are clearly the early beginnings of UTEOTW. On the second take, on there, you can hear Edge sing 'Sixty-nine' as a backing vocal during the chorus.