the goldfish trick is where you take a live goldfish, put it in a glass of water, drink it and then vomit it up alive.
James: Come on man, you can do it!
Tom: BLARGH, BLAAAAH, HEEEAARRRGH! WOOOO!
James: HOLY CRAP YOU DID THE GOLDFISH TRICK!!!
Tom: I FEEL LIKE A FUCKING GOD!!!!!!