packet from Paris, n. — Green’s Dictionary of Slang

packet from Paris n.

also parcel from Paris

[? clichéd identification of France with sex, though not usu. with procreative intercourse]

(Aus./N.Z.) a baby.

1984		Partridge DSUE (8th edn) 846/2: C.20.
1988		McGill Dict. of Kiwi Sl. 81/1: packet from Paris a baby.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].