This word meana something that is the coolest, most sexy, best, extraordinary thing you have ever heard/seen/eaten/smelled/smoked/touched/made/anything and everything.
When a sneaky individual sharts in McDonald's and fails to own up to the deed, then after some time this yellow excrement is then mistaken for spilled McCurry sauce by a second sneaky individual and is licked up while nobody is looking. This commonly results in a puddle of diarrhoea and vomit on the McDonald's stool/ bench, known as a 'Shazzamac'.
girl: omg the smell of frigginpickles from your Big Mac makes me sick.
boy: that smell is no big mac that's a shazzamac fo sho.
girl: ew I just put my hand in it
A dirty cunt who only wears dickies and thinks he is attractive. A pikey who travels all over to different council flats but is most commonly seen in a household of 28 in Manchester.