Which iconic advertising slogan from the 1940s was originally created as wartime propaganda before being adopted by a major consumer brand post-WWII?

Throughout history, certain advertising slogans have become so iconic that they transcended their products and became part of cultural heritage. These marketing phrases didn't just sell products—they reflected societal values, shaped consumer behavior, and sometimes even altered the linguistic landscape. Test your knowledge of these historical marketing masterpieces that stood the test of time and influenced how products were advertised for generations to come.

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"We Can Do It!" (later associated with Rosie the Riveter imagery for Westinghouse Electric)
"Good to the Last Drop" (Maxwell House Coffee)
"When It Rains It Pours" (Morton Salt)
"Say It With Flowers" (Florists' Telegraph Delivery Association)