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A Deer Isle Smile refers to one's ass crack showing. The term was founded in Deer Isle Maine where there are a large number of obese people whose pants are riding a little too low.
"I saw Chucky today, boy he had one hell of a Deer Isle smile."
by McWill February 15, 2009

Words related to Deer Isle Smile

ass ass crack butt crack deer deer isle flashing isle mooning smile