I'm drunk so let me be completely honest here.

Vicodin:

TIME TO RIP..
I come out eyebrow rising, to fuckin pussies boasting hate..
You just like an 'advertising', cuz you 'mostly fake'..
"boasting hate" makes no sense but the line about advertising is clever

This faggot likes to 'blow', that's why he can't 'chew'-when-he-rhymes..
Your raps are like 'The Eminem Show', 'heard too-many-times'..
explain to me why anyone would want to chew when they rhyme. Other than that nonsense it's a good line.
NUFF PLAY..

I 'lash-out-rage' like a 'Pitbull' that's off-it's-leash..
You put ya 'cash-where-ya-mouth-is', but ya 'talk-is-cheap'..
not bad

Your like a 'rocket wit zero blast' n 'smaller-than-guitar-picks'..
I'll cut ya career-'short'-fast like 'Summer-in-the-Arctic'..
smaller than guitar picks is awful hyperbole for the sake of a "multi" but still not bad
I'm like a 'microwave' cuz I 'DING'-and-rattle-cats..
You can't spit, that's like 'Mike Weir' tryin to 'swing-a-battle-rap'!
Not bad again. Overall a very much above average verse (which isn't say much by itself) where most of the punches at least made sense and some creativity was displayed.

S.Carter:

ya so scared ur wetter than a PRETEENS wet DREAM//
u cant redeem ur matches even if lyricism was flowin in ur bloodSTREAM//
Don't say wetter than a wetdream, use a synonym of wet. Why would he able to redeem his matches if lyricism was flowing in his bloodstream? Why is he trying to redeem his matches? It makes no sense.
ya verbal skills kick worse than a nine month old BABY//
statistics show your chances of survival are less than MAYBE//
Does skills kick mean they're bad? An ok line
tell me how it feels as my lyrical slugs fill your chest with HOLES//
i light ya up like, hotter than livin in six HELLHOLES//
OK 50, put down your nine and relax. Living in sex hell holes? That's just awful.
ya spittin reminds me of chinese take out, sickening and SLOW//
a .5 on the richter scale could be enough to interrupt your FLOW//
Is Chinese food really slow? Well, not bad
you call me a feminite while you walk around in tight leather//
i know guys excite ya, but you think your pants could get any wetter//
terrible closer.

I'll vote for vicodin because most of the time I wasn't thinking "Jesus this is awful."