"St. Albans [Girl Scout] Camp Song Book" (Allyn, WA), as part of a 3-stanza song, with the first two stanzas unrelated:

A fly flew into a grocery store
Alone teehee alone
He’d never been in a store before
Alone teehee alone
Put his leg in the bread
And his foot in the ham
And stuck out his tongue at the grocery man
And then he flew out of the store again
Alone teehee alone

https://www.girlscoutsww.org/content/dam/girlscoutsww-redesign/documents/top-pdfs/st-albans-camp-songbook.pdf

Tune not indicated, but it scans to "When Johnny Comes Marching Home."


II
Recited by an elderly lady:

Jaybird jaybird flew through the store,
He shit on the counter, and he shit on the floor.
He wiped his ass with a piece of ham,
Didn't give a penny to the grocery man.

https://www.facebook.com/reel/913828717347782

III
In the notebook of an American POW in Germany, 1944:

         O FEELTHY FLY

A fly flew into the grocery store,
He flew right in – by the front door,
He fluttered round the bacon,
And he fluttered round the ham,
And finally lit on the strawberry jam.

Oh feelthy fly, oh feelthy fly, oh feelthy fly, repulsive parasite.


The fly looked here, the fly looked there,
Under the table and under the chair.
And into the office which was nearly dark,
And there he spied the lady clerk.

Oh feelthy fly, oh feelthy fly, oh feelthy fly, repulsive parasite.

The fly lit on the lady’s shoe,
Then up her stockings, both brand new.
And when it had reached above the knee,
He sat down to see what he could see.

Oh feelthy fly, oh feelthy fly, oh feelthy fly, repulsive parasite.


The lady clerk when she felt that fly,
Settled upon her starboard thy,             [sic
She spread her knees and held her breath,
And squashed that feelthy fly to death.

Oh feelthy fly, oh feelthy fly, oh feelthy fly, repulsive parasite.

https://wallyswar.wordpress.com/pow-log/