Massive cigar. Usually bigger than a massive BBC (Big Black Cock). The term originated in a Youtube video I just watched about rolling cigars, where the man calls big cigars "Mandingo Jaw Breakers".
A woolen garment, similar to a Cardigan, but worn by Men in their twenties. Unlike a normal button fronted Cardigan, favoured by Men in their middle ages, a Mandigan is a garment for young, fashion concious, confident Men who care deeply about their appearance but do not wish to suffer the cold.