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Hair cleavage is when a guy shows off his messy hair like it's a crime scene and wears a shirt that looks like it was stolen from a jail cell.
He showed up to the party with hair all over his chest and a shirt that looked like it was dipped in mud.
My cousin’s hair cleavage was so bad, it looked like he had a raccoon in his shirt.
He tried to look cool with his hair cleavage, but it just looked like he had a bad hair day and a worse life.