This was something overheard between two of my coworkers the other day at work.
One of them (lets call her CW1) is complaining of being sore, or having a headache, or something along those lines, and the other (CW2) offers her some pain medication. Their conversation hurt my brain:
CW2: Here, I have some acetometophen here if you want.
CW1: Oh, no I can't take that, I can only take Tylenol.
(and as if this wasn't bad enough)
CW2: Oh, yeah, acetometophen is much stronger than Tylenol.