Dose
Simultaneously, you throw your knife at another person who's throwing a knife at you and you both get a dose of your own medicine. Literally, there's poison on these knives and now you've both been stabbed.
Watch as the dose of poison sinks into your body through the knife that's in your chest, as it simultaneously happens to the other guy too.
ざい
None
None
"I need a dose of the antidote!" you yell, and the other guy looks you dead in the eyes. They slowly pull a tiny xylophone (ざい) out of their pocket, play a few notes, and then eat it. "Ah, you'd like a dose of the xylophone cure, wouldn't you?"
Now you're begging them for a dose of the xylophone drug. Just a taste, you want to live!