The "Nape" song to the tune "Tea for Two" is different song.
Here is a transcription of "Nape Is Great" sung by Mark Atherton
and The Sandies recorded on the cd Commando Sing: Korat Royal
Thai Air Force Base, 27 October 1974.

Nape is Great
(Tune - Tea for Two)

Da-da-ta-ta... TITS!

Nape is great, so hit my grids
It burns, it bakes, it sticks to kids
Nape is great, so drop it on their heads
(watch 'em burn and see their guts pop out)

When you drop a can or two
It hits their bods and sticks like glue
Nape is great so drop their acne too!

And the corsaires beat the bantoos
Every week, with the all whistle(?)

And there was Ardvark
Swinging on the outhouse door
Without their wingtrail (?)
And there was Herpes (?)
Always looking mighty poor

.

The ? indicate lines that are uncertain.

I can't find earlier references for "Nape is Great" earlier than
this 1974 recording. It shows up in later fighter pilot song books.

The "Ta-da-da-ta TITS!" was a common intro to a drinking song.
The ending ditty "Swinging on the outhouse door" was a common way
to end a drinking song.

Outhouse door: https://mudcat.org/thread.cfm?threadid=28655