This is track #3 from the original album of 1985 as well as the 2007 remastered re-release.
Paddy on the song:
"It was a song about a girl who got pregnant, and the idea of her calling the kid after her lust for life. Thomas Dolby never thought he did justice to that song." - Epic promo flier, 1995
Please be careful is never careful
Till it hears the gun
She will always pay the bills
For the, having big fun