They won't frown always some sweet Day — Ice Cream

They won't frown always-some sweet Day 1
When I forget to tease-
They'll recollect how cold I looked
And how I just said "Please."

Then They will hasten to the Door 5
To call the little Girl
Who cannot thank Them for the Ice
That filled the lisping full.
(F.923/J.874)
[1] sweet Day:: the day ice cream cart came.
[2] I:: the ice cream man. tease:: to incite, gather his customers by screaming.
[7] Ice:: a hint on the answer.

Johannes Jaguez, who drives his locomotive ice-cream concern right out into Jersey . . . "I—scream!" went off Ducthman, with a roar that started Jersey half out of his boots. "Thunder and hoop-snakes! I know you scream like all possessed. But I wanted to know the name of that are stuff!" I explained-"Ice-cream." ─ Dollar Monthly Magazine (1865)