The residue left after someone writes or draws something on a car window in the winter. Common examples are smiley faces, hearts, tic-tac-toe boards, names, and "HELP" spelled backwards.
"It look's like someone drew a smiley face on the window back here."
"What? I guess someone left me a moldy strawberry."
"What? I guess someone left me a moldy strawberry."
by Cooper Estav January 3, 2014