Like mixing some Benadryl and penicillin then I’m filling the clip

from Bad Meets Evil (Ft. Slaughterhouse) – Loud Noises Lyrics on Rap Genius

Meaning

First off Benadryl can really fuck you up. If you overdose on them it is a really sick feeling you’re drowsy as shit and restless at the same time. Add that to penicillin and you would be fucking ill.

It is not uncommon for antibiotics too make a sick person feel even sicker. Therefore it is possible for penicillin mixed with Benadryl too make you feel even worse than you felt before.

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