The nauseating, upset stomach feeling you sometimes get after dining out on some cheap sushi.
Duder 1: "Oh my god dude my stomach hurts. I feel like I'm gonna puke."
Duder 2: "Dang dude what did you have for dinner tonight."
Duder 1: "I went to sushi. I knew I shouldn't have got that mackerel."
Duder 2: "Yea dude, mackerel always gives you the sushi sickness."
Prices shown in USD.