Last phrase can indeed be dubious in theory, so here is a Quick "understanding" of It :
You buy a Ice cream, you eat the **** Ice cream, you lick your lips and then, the cone paper, you finish the job, look's at the vendor and say" that was a hella good Ice cream!", Walks away then trow the cone paper on the ground while murmuring : "that was godam awful!".
It Just doesn't make sense.