FIRST TIME DRINKING MONSTER

I'm 19 so its a bit overdue, but only a bit. I got a monster from the nearby store, one that my childhood friend works at (I ran into him AGAIN). I got the punch flavour, its oddly sweet? I expected it to taste less like faygo and be more sour from what I've heard of it.... Anyways I'm really, like, really bad with caffeine since I'm so tiny so I'm going to have to portion this out so I don't wake up in the hospital LOL